head and neck anatomy study guide
• Outline the main muscles of mastication and their actions Maxillary division trigeminal nerve (V3) Items from the Course Reserves List for VBMS601 Gross Anatomy-Structural Adaptations to Function are marked. • Junction of pharynx and esophagus Pal = Palatine It is the control and communication center as … L Lambdoid • A newborn’s skull is large compared with other parts of the skeleton. • State the structures that are situated at the level of C6 • Divides neck into anterior and posterior triangles (see Section 1.4, Head and Neck—Neck) • Sternal head attaches to manubrium of sternum. • Wrinkles forehead • Inferior surface has two openings or nares (nostrils) • Can be divided Lambdoid suture separates parietal and temporal bones from occipital bones. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Locate and identify the muscles of the…. • Draws corners of mouth down • Loose connective tissue (4) • Neurocranium Included are web resources, books (both print and electronic), and specialty resources such as flashcards. • Bifurcation of common carotid artery into external and internal carotid arteries Between temporal bone (petrous area) and sphenoidal bone • Stabilized by three ligaments • Used in grinning • Protrusion—lateral pterygoid, masseter, and medial pterygoid muscles • Superior orbital fissure Brain impacts opposite side of skull and rebounds to site of impact, with resulting bruising. • Crosses face below zygomatic arch • Most arise from bone and insert into skin. • Superior belly of omohyoid muscle crosses carotid sheath. • Forms prominence of cheek The idea is simple - study the structures you need to learn on a labeled overview image, and then try labeling each structure yourself using an unlabeled diagram. See our User Agreement and Privacy Policy. • Raises upper lip as when showing contempt } KEY TERMS. • Arises from external carotid artery, crosses mandible, and traverses face to medial angle of eye • Contains frontal lobe of brain • Contains four foramina in a crescent on either side in the body of the sphenoidal bone Scalp Lacrimal • Used when grimacing • Hinge movements (depression and elevation) occur in lower compartment. • Tuberculum sellae—swelling anterior to sella turcica They all originate embryologically from the second pharyngeal arch and are all innervated by terminal branches of the facial nerve (cranial nerve [CN] VII). • Mylohyoid line: ridge extending upward and backward on internal surface of alveolar part of mandible for attachment mylohyoid muscle, • Submandibular fossa: long depression below mylohyoid line, which accommodates submandibular gland, • Sublingual fossa: concavities on either side of mental spine for sublingual gland. Scalp has rich blood supply, so bleeding from a scalp injury is profuse. Skull Jugular foramen Quizlet flashcards, … • Located above the root of the nose, between supra-orbital margins • Carotid pulse can be palpated at anterior border sternocleidomastoid (level of C5 vertebra). • Encloses orbits, nose, paranasal sinuses, mouth, and pharynx Guide Ethmoidal • Divides neck into anterior and posterior triangles (see Section 1.4, Head and Neck—Neck) • Used for assessing right heart (venous) pressures • Comminuted—bone broken into several pieces. • Clavicular head attaches to superior middle third of clavicle. • Glabella } • Layer that collects fluid from injury of infection • Inner palpebral part gently closes eyelids (blinking). Superior belly of omohyoid muscle crosses carotid sheath. • Auricle—part of external ear • Superior belly of omohyoid muscle crosses carotid sheath. • Squamous suture separates squamous part of temporal bone from parietal bone. Occipital bone Greater and lesser wings of sphenoidal boneLacrimal nerve (V1)Frontal nerve (V1)Trochlear nerve (IV)Oculomotor nerve (III)Abducent nerve (VI)Nasociliary nerve (V1)Superior ophthalmic vein Level at which inferior and middle thyroid arteries enter the thyroid gland. • Highly vascular • Scapulae • Posterior clinoid processes—swelling at either end of dorsum sellae • Key landmark of neck Old People From Texas Eat Spiders 1.1 Topographic Surface Anatomy • Inner palpebral part gently closes eyelids (blinking). Understand the basic anatomy of the head and neck Identify the major muscles of the head and neck Know the role of ligaments in head and neck anatomy. • Depressed • Runs from styloid process to angle of mandible Greater wing of sphenoidal bone • The anterior fontanelle • When assessing a patient with a head injury, the Glasgow Coma Scale (GCS) is useful. Neurocranium • Lacrimal part draws eyelids and lacrimal puncta medially to drain tears. • Mental foramen below second premolar transmits terminal branch of inferior alveolar nerve to supply skin and mucus membrane of lower lip and chin. • Descends from forehead to nose S Squamous Zygomatic Lacrimal part draws eyelids and lacrimal puncta medially to drain tears. • Joins supra-orbital to form angular vein • Well vascularized and innervated Veins. Let’s examine their overall anatomy by taking a transverse cut through the maxillary sinus. • = Facial skeleton • Composed of 14 bones A newborn’s skull is large compared with other parts of the skeleton. • Anterior clinoid processes—medial projections of lesser wings of sphenoidal bones • Done in extreme emergency • Facial skeleton is small compared to calvaria. • Ethmoidal bone • Where parietal bone articulates with greater wing of sphenoidal bone • Forms foundation for face • Le Fort I • Le Fort III • Transverse facial artery • Primary passive support Additionally, most arise from the bones of the face or fascia and insert into the dermis of the skin overlying the scalp, face, and anterolateral neck. • Hyoid bone • Linear Level of middle cervical sympathetic ganglion. • Unpaired bone of lower jaw • Mentalis • The mastoid process is not present at birth but develops in the first 2 years of life. Clinical Points Comminuted—bone broken into several pieces. • Elevation—temporalis, masseter, and medial pterygoid muscles • Sphenosquamous suture separates squamous part of temporal bone from greater wing of sphenoidal bone. Draws medial end of eyebrow medially and inferiorly for a concerned look, Creates transverse wrinkles over nose—frowning, Anterior, superior, and posterior auricular, Important for speech, holding food between teeth, whistling, blowing, Used in whistling, sucking, and horn blowing, Raises upper lip as when showing contempt, Extends from superior nuchal line to superior orbital ridge, Laterally extends to external acoustic meatus and zygomatic arch. • Condylar process—part of temporomandibular joint Download Netter’s Head and Neck Anatomy For Dentistry PDF Book. Needle Cricothyrotomy • Largest and strongest bone in face • Can be one of several types Medulla oblongataVertebral arteryMeningesSpinal roots of accessory nerve • Anterior, superior, and posterior auricular Fracture lines radiate away from point of impact. • Composed of 8 bones A Anterolateral A. • Used in smiling and laughing Branches of external carotid artery to scalp, Branches of internal carotid artery to scalp. • Outer orbital part that tightly closes eyelids (squinting). Most arise from bone and insert into skin. • Does not articulate with any other bone • Elevates corner of mouth • Gliding movements (protrusion and retrusion/retraction) occur in upper compartment. • Branches to upper and lower lip and nose • Lambdoid suture separates parietal and temporal bones from occipital bones. • Two halves of mandible begin to fuse during first year. • Gliding movements (protrusion and retrusion/retraction) occur in upper compartment. • Sublingual fossa: concavities on either side of mental spine for sublingual gland • Produced by hard blows in regions where calvaria is thin Now customize the name of a clipboard to store your clips. • Stylomandibular ligament • Philtrum—midline infranasal depression of upper lip BIO 475 fBIO 475 HUMAN ANATOMY STUDY GUIDE – Chapter 8 Chapter 8: The Head: Overview & Bones Isidore file: BIO475 17-Head I Ch 08 cn.ppt Learning Objectives: When you have completed studying the class notes, you should be able to: 1. • Viscerocranium • Composed of three parts: lacrimal, palpebral, orbital • Most frequent The skeletal section of the head and neck forms the top part of the axial skeleton and is made up of the skull, hyoid bone, auditory ossicles, and cervical spine. - This phase of opneing is occurring only in lower synovial cavity of joint (Condylar head rotates around a point on undersurface of articular disc, several muslces are involved) Gliding: arthrodial motion 1 This guide contains a variety of resources to help with the study of veterinary anatomy. • Form V-shaped thyroid notch • May cause airway problems, nasolacrimal apparatus obstruction, and cerebrospinal fluid (CSF) leakage • Thin, broad sheet of muscle within superficial fascia of the neck • Arranged as sphincters or dilators around orifices of face, • Innervated by one of five main branches of facial nerve (occipitalis innervated by posterior auricular branch), • Composed of three parts: lacrimal, palpebral, orbital. HEAD AND NECK ANATOMY & CLINICAL CONDITIONS Dr S.Bola CT1 ENT 2. • Horizontal fracture of one or both maxillae at level of the nasal floor • Three auditory ossicles Two processes at superior end: coronoid process and condylar process, Coronoid process—attachment of temporalis muscle, Condylar process—part of temporomandibular joint, Mandibular notch—concavity between condylar and coronoid processes, Mandibular foramen: on inner surface of ramus; entrance to mandibular canal, through which passes the inferior alveolar nerve, Lingula—thin projection of bone overlapping mandibular foramen, Mylohyoid groove—groove leading anteriorly and inferiorly from mandibular foramen indicating course of mylohyoid nerve and vessels, Articulation between condylar process of mandible, articular tubercle of temporal bone, and mandibular fossa, Contains fibrocartilaginous disc, which divides joint cavity into two compartments. Start studying Head and Neck anatomy, ch. Chapter #9 Head & Neck Anatomy Study Guide study guide by melissa_mcdaniel9 includes 40 questions covering vocabulary, terms and more. • Each meets body inferiorly at angle of jaw. Each meets body inferiorly at angle of jaw. jQuery('.ufo-shortcode.code').toggle(); Related Lower border corresponds to level of C6 vertebra. %d bloggers like this: • Squamous suture separates squamous part of temporal bone from parietal bone. Head and neck cross section. • Depresses mandible } Lateral thickened parts of articular capsule, Runs from spine of sphenoid to lingual of mandible, Serves as swinging hinge and check ligament, Runs from styloid process to angle of mandible, Depression—suprahyoid and infrahyoid muscles, gravity, Elevation—temporalis, masseter, and medial pterygoid muscles, Protrusion—lateral pterygoid, masseter, and medial pterygoid muscles, Retraction/retraction—temporalis, masseter muscles, Side to side grinding—retractors of same side, protruders of opposite side. • Enlargement of frontal and facial regions associated with increasing size of paranasal sinuses Anterior to auricle: ophthalmic, maxillary, and mandibular divisions of cranial nerve (CN) V (trigeminal), Posterior to auricle: cutaneous branches from C2 and C3 spinal nerves, Arises from external carotid artery, crosses mandible, and traverses face to medial angle of eye, Begins in forehead and passes medially to join supratrochlear vein, Sends branch through supra-orbital notch to joint superior ophthalmic vein. • U-shaped bone • Coronoid process—attachment of temporalis muscle Student Learning Outcomes demonstrate a thorough knowledge of the functional anatomy of the head, neck and vertebral column; 2. apply anatomical knowledge in evaluating movement of the axial skeleton; 3. appreciate the link between functional anatomy and biomechanics of movement; 4. • Mental foramen below second premolar transmits terminal branch of inferior alveolar nerve to supply skin and mucus membrane of lower lip and chin. • Brain impacts opposite side of skull and rebounds to site of impact, with resulting bruising. WordPress theme by UFO themes • Two veins provide main venous drainage of face. • Contains foramina for transmission of nerves and vessels Common variants of fractures of the maxillae, naso-orbital complex, and zygomatic bones (midface fractures) were classified by Le Fort (surgeon and gynecologist), • Horizontal fracture of one or both maxillae at level of the nasal floor, • May present with crepitus on palpation and epistaxis, • Pyramidal-shaped fracture that includes horizontal fracture of both maxillae, extending superiorly through maxillary sinuses, infra-orbital foramina, and ethmoids to bridge of nose, • Separates central face from rest of skill, • Includes fractures of Le Fort II plus horizontal fracture through superior orbital fissures, ethmoidal and nasal bones, great wings of sphenoidal bones, and zygomatic bones. • Contains cerebellum, pons, and medulla oblongata The mastoid process is not present at birth but develops in the first 2 years of life. • Thyroid cartilage 2 • Creates transverse wrinkles over nose—frowning • Dorsum extends from root to apex • Metopic suture between two frontal bones is largely obliterated with fusion of frontal bones foramen magnum. • Side to side grinding—retractors of same side, protruders of opposite side Identify the regions of the head. • External periosteum of calvaria if ( 'undefined' !== typeof windowOpen ) { • Body • Each meets body inferiorly at angle of jaw. Deep aspects of scalp drain to deep temporal veins to pterygoid venous plexus. Jun 11, 2016 | Posted by admin in ANATOMY | Comments Off on Head and Neck Study Guide Clinical Points • Platysma • Brain impacts opposite side of skull and rebounds to site of impact, with resulting bruising. • Only complete ring cartilage in respiratory tract, • Shaped like signet ring with band anteriorly. Sternal head attaches to manubrium of sternum. Internal Features of Base of Skull. • Transverse incision made through skin, at midpoint between suprasternal notch and thyroid cartilage The Gross Anatomy of the Head and Neck: 1 2. HEAD AND NECK • Mylohyoid groove—groove leading anteriorly and inferiorly from mandibular foramen indicating course of mylohyoid nerve and vessels • Can occur as result of direct trauma to head • Coronal suture separates frontal and parietal bones. Foramen lacerum if ( 'undefined' !== typeof windowOpen ) { • Risorius • Orbicularis oris • Fractures can cause intracranial bleeding, as pterion overlies anterior division of middle meningeal artery and vein. • Can be seen and palpated when acting unilaterally to flex and rotate head and neck to one side, so that ear approaches shoulder and chin turns in the opposite direction, • Smooth midline prominence on the frontal bone, • Located above the root of the nose, between supra-orbital margins, • Can palpate superficial temporal artery at lateral end, • Bony prominence behind external acoustic meatus, • Site of proximal attachment sternocleidomastoid muscle, • Inion—prominent point of external occipital protuberance at back of head, • Skin-covered cartilage, except for lobule, • Features include: pinna; tragus; antitragus and helix, • Inferior surface has two openings or nares (nostrils), • Philtrum—midline infranasal depression of upper lip, • Felt over ramus of mandible when teeth are clenched. Con = Conchae • Posterior auricular • Site of carotid sinus (baroreceptor) and carotid body (chemoreceptor) Squamous suture separates squamous part of temporal bone from parietal bone. Most bones of the skull are bound by sutures, a type of fibrous joint that fuses with age and becomes immobile. • Scalp has rich blood supply, so bleeding from a scalp injury is profuse. • Depression—suprahyoid and infrahyoid muscles, gravity They all originate embryologically from the second pharyngeal arch and are all innervated by terminal branches of the facial nerve (cranial nerve [CN] VII). Inner palpebral part gently closes eyelids (blinking). jQuery(document).ready(function() { jQuery( document.body ).on( 'click', 'a.share-twitter', function() { var windowOpen; • Cranial vault and base of skull Study Aims They all originate embryologically from the second pharyngeal arch and are all innervated by terminal branches of the facial nerve (cranial nerve [CN] VII). A Anterior • Terminal branch of external carotid • Nasalis • Muscles of facial expression: The muscles of facial expression are in several ways unique among the skeletal muscles of the body. • Orbicularis oculi When assessing a patient with a head injury, the Glasgow Coma Scale (GCS) is useful. • Sagittal suture separates two parietal bones. • Traversed by skin ligaments (retinacula cutis) At the end of your study, you should be able to: • First bones to be completely ossified during development • Mandibular foramen: on inner surface of ramus; entrance to mandibular canal, through which passes the inferior alveolar nerve • Does not articulate with any other bone, • Formed from anterior, midline fusion of two laminar plates = laryngeal prominence (Adam’s apple), • Bifurcation of common carotid artery into external and internal carotid arteries, • Site of carotid sinus (baroreceptor) and carotid body (chemoreceptor). Skull (Calvaria) Fractures • Rami 1.2 Bones and Ligaments Cranial/ Orbital Bones: Occipital, Parietal, Frontal, Temporal, Ethmoidal, Sphenoidal • Metopic suture between two frontal bones is largely obliterated with fusion of frontal bones, • Divided into anterior, middle, and posterior cranial fossae, • Formed by frontal bone anteriorly, ethmoidal bone medially, and lesser wing of sphenoidal bone posteriorly, • Frontal crest—midline bony extension of frontal bone, • Foramen cecum—foramen at base of frontal crest, • Crista galli—midline ridge of bone from ethmoid posterior to foramen cecum, • Cribriform plate—thin, sievelike plate of bone on either side of crista galli, which transmits olfactory nerves from nasal cavity to olfactory bulbs, • Contains temporal lobe, hypothalamus, and pituitary gland, • Formed by greater wing and body of sphenoidal bone, petrous temporal bone, lesser wing of sphenoidal bone, • Sella turcica—central depression in body of sphenoidal bone for pituitary gland, • Tuberculum sellae—swelling anterior to sella turcica, • Dorsum sellae—crest on body of sphenoidal bone posterior to sella turcica, • Anterior clinoid processes—medial projections of lesser wings of sphenoidal bones, • Posterior clinoid processes—swelling at either end of dorsum sellae, • Foramen lacerum (one on each side)—jagged opening closed by plate of cartilage in life, transmits nothing, • Contains four foramina in a crescent on either side in the body of the sphenoidal bone, • Contains cerebellum, pons, and medulla oblongata, • Composed largely of occipital bone, body of sphenoidal bone, petrous, and mastoid parts of temporal bone, • Internal occipital crest—divides posterior fossa into two lateral cerebellar fossae, • Grooves for transverse and sigmoid dural venous sinuses, • Jugular foramen—transmits sigmoid sinus (internal jugular vein) and several cranial nerves, • Internal acoustic meatus—anterior and superior to jugular foramen, transmits facial and vestibulocochlear nerves (CN VII and CN VIII), • Hypoglossal canal—anterolateral and superior to foramen magnum, transmits hypoglossal nerve (CN XII). 1 • Useful for assessing hydration and measuring heart rate and intracranial pressure • Can be seen and palpated when acting unilaterally to flex and rotate head and neck to one side, so that ear approaches shoulder and chin turns in the opposite direction 1.3 Superficial Face Occipital Guide • Major arterial source for face • Skull var sharing_js_options = {"lang":"en","counts":"1"}; CT1 ENT. • Know the layers of the scalp, its innervation, and vascular supply Viscerocranium • Sphenomandibular ligament Hypoglossal canal • Levator labii superioris alaeque nasi • Scalp has rich blood supply, so bleeding from a scalp injury is profuse. // If there's another sharing window open, close it. • Sphincter of mouth • Pyramidal-shaped fracture that includes horizontal fracture of both maxillae, extending superiorly through maxillary sinuses, infra-orbital foramina, and ethmoids to bridge of nose • Divided into anterior, middle, and posterior cranial fossae (Mandible) Open this website to get Netter’s Head and Neck Anatomy For Dentistry PDF 2. The mandible articulates with the temporal bone, and in chewing and speaking it is only the mandible or lower jaw that moves; the upper jaw or maxilla remains stationary. Metopic suture between two frontal bones is largely obliterated with fusion of frontal bones, Divided into anterior, middle, and posterior cranial fossae, Formed by frontal bone anteriorly, ethmoidal bone medially, and lesser wing of sphenoidal bone posteriorly, Frontal crest—midline bony extension of frontal bone, Foramen cecum—foramen at base of frontal crest, Crista galli—midline ridge of bone from ethmoid posterior to foramen cecum, Cribriform plate—thin, sievelike plate of bone on either side of crista galli, which transmits olfactory nerves from nasal cavity to olfactory bulbs, Contains temporal lobe, hypothalamus, and pituitary gland, Formed by greater wing and body of sphenoidal bone, petrous temporal bone, lesser wing of sphenoidal bone, Sella turcica—central depression in body of sphenoidal bone for pituitary gland, Tuberculum sellae—swelling anterior to sella turcica, Dorsum sellae—crest on body of sphenoidal bone posterior to sella turcica, Anterior clinoid processes—medial projections of lesser wings of sphenoidal bones, Posterior clinoid processes—swelling at either end of dorsum sellae, Foramen lacerum (one on each side)—jagged opening closed by plate of cartilage in life, transmits nothing, Contains four foramina in a crescent on either side in the body of the sphenoidal bone, Contains cerebellum, pons, and medulla oblongata, Composed largely of occipital bone, body of sphenoidal bone, petrous, and mastoid parts of temporal bone, Internal occipital crest—divides posterior fossa into two lateral cerebellar fossae, Grooves for transverse and sigmoid dural venous sinuses, Jugular foramen—transmits sigmoid sinus (internal jugular vein) and several cranial nerves, Internal acoustic meatus—anterior and superior to jugular foramen, transmits facial and vestibulocochlear nerves (CN VII and CN VIII), Hypoglossal canal—anterolateral and superior to foramen magnum, transmits hypoglossal nerve (CN XII), Articulates with temporal bone at temporomandibular joint, Can be divided into lower base and upper alveolar part, Has mental protuberance anteriorly and inferiorly where two sides come together, Mental spine: rough projection on inner surface of body in midline. The neck and throat are often neglected in figure drawing, resulting in a featureless column that looks incapable of holding up the head. • Sternal head attaches to manubrium of sternum. • Facial artery can be palpated over lower margin body of mandible in line with a point one fingerbreadth lateral to the angle of the mouth. _stq = window._stq || []; • Hypoglossal canal—anterolateral and superior to foramen magnum, transmits hypoglossal nerve (CN XII) A number of landmarks visible on the body’s surface correspond to deeper structures. • Describe the division of the base of skull into anterior, middle, and posterior cranial fossae and the contents of each /* ]]> */ Foramen/Opening Besides wearing necklaces and spraying perfume, the neck has other functions as well. • First three are adherent to skull, move as one. • Two processes at superior end: coronoid process and condylar process, • Coronoid process—attachment of temporalis muscle, • Condylar process—part of temporomandibular joint, • Mandibular notch—concavity between condylar and coronoid processes, • Mandibular foramen: on inner surface of ramus; entrance to mandibular canal, through which passes the inferior alveolar nerve, • Lingula—thin projection of bone overlapping mandibular foramen, • Mylohyoid groove—groove leading anteriorly and inferiorly from mandibular foramen indicating course of mylohyoid nerve and vessels. [CDATA[ */ 1 • List the foramina and key structures that pass through them So when you hear Bohemian rhapsody, you can turn your head towards that bar and maybe decide to go in and have some fun. After the brain, let’s take a look at a couple of sections where other important structures of the head and neck are visible. The muscles of the head and neck are responsible for a variety of movements, including facial expression, mastication, and eye movement, in addition to moving the head. First three are adherent to skull, move as one. • Coronal suture separates frontal and parietal bones. • Branches of external carotid artery to scalp • Level of middle cervical sympathetic ganglion. • Malleus, incus, and stapes windowOpen.close(); • C6 vertebral level • Contains sweat and sebaceous glands and hair follicles, • Aponeurosis of occipitofrontalis muscle (3), • Connects occipitalis, frontalis, and superior auricular muscles, • Layer that collects fluid from injury of infection, • Moves freely with first three layers over pericranium. Coronal suture separates frontal and parietal bones. • Contains varying amount of fat—for example, buccal fat pads of cheek The mandible articulates with the temporal bone, and in chewing and speaking it is only the mandible or lower jaw that moves; the upper jaw or maxilla remains stationary. • Foramen ovale Occipital bone // If there's another sharing window open, close it. For instance, it supports the position of the head and enables us to turn our head towards stimuli. See Section 2.2, Bones and Ligaments • Large veins such as the subclavian have relatively constant relationships to easily identifiable anatomical landmarks. • Lacrimal part draws eyelids and lacrimal puncta medially to drain tears. • Lingula—thin projection of bone overlapping mandibular foramen Greater wing of sphenoidal bone Key Landmarks of Midline of the Neck Optic canal Contains sweat and sebaceous glands and hair follicles, Aponeurosis of occipitofrontalis muscle (3), Connects occipitalis, frontalis, and superior auricular muscles, Layer that collects fluid from injury of infection, Moves freely with first three layers over pericranium. _stq.push([ 'view', {v:'ext',j:'1:6.0.1',blog:'125224839',post:'34053',tz:'0',srv:'basicmedicalkey.com'} ]); Foramina of Skull. • Lambdoid suture separates parietal and temporal bones from occipital bones. • Foramen magnum—transmits spinal cord • Most arise from bone and insert into skin. • Cranial base formed from • Two parietal bones laterally Two veins provide main venous drainage of face. • Runs from spine of sphenoid to lingual of mandible The head rests on the top part of the vertebral column, with the skull joining at C1 (the first cervical vertebra known as the atlas). • Frontal crest—midline bony extension of frontal bone Major Sutures of the Skull. • Cranial base • Parotid duct can be palpated at medial border (duct opens over second molar inside cheek). See our Privacy Policy and User Agreement for details. • Muscles related to the ear Check out our vivid video that focuses on the anatomy of the head and neck.Learn more at https://www.anatomage.com/table6/. • Lateral temporomandibular ligament Numerous holes appear in the cranial floor, and they are called foramina. Only gold members can continue reading. • A newborn’s skull is large compared with other parts of the skeleton. Arranged as sphincters or dilators around orifices of face, Innervated by one of five main branches of facial nerve (occipitalis innervated by posterior auricular branch), Composed of three parts: lacrimal, palpebral, orbital. Only complete ring cartilage in respiratory tract, Shaped like signet ring with band anteriorly. • Prone to fractures in facial trauma The neck muscles, including the sternocleidomastoid and the trapezius, are responsible for the gross motor movement in the muscular system of the head and neck. Common variants of fractures of the maxillae, naso-orbital complex, and zygomatic bones (midface fractures) were classified by Le Fort (surgeon and gynecologist) • Foramen lacerum (one on each side)—jagged opening closed by plate of cartilage in life, transmits nothing windowOpen = window.open( jQuery( this ).attr( 'href' ), 'wpcomtwitter', 'menubar=1,resizable=1,width=600,height=350' ); • Wrinkles skin of forehead • Bounded laterally by alae of nose A number of landmarks visible on the body’s surface correspond to deeper structures. • Dorsum sellae—crest on body of sphenoidal bone posterior to sella turcica Regions of the head and neck. • Branches of internal carotid artery to scalp • Draws medial end of eyebrow medially and inferiorly for a concerned look, • Creates transverse wrinkles over nose—frowning, • Anterior, superior, and posterior auricular, • Important for speech, holding food between teeth, whistling, blowing, • Holds food between teeth during chewing, • Used in whistling, sucking, and horn blowing, • Raises upper lip as when showing contempt, • Extends from superior nuchal line to superior orbital ridge, • Laterally extends to external acoustic meatus and zygomatic arch. return false; • Articulation between condylar process of mandible, articular tubercle of temporal bone, and mandibular fossa, • Contains fibrocartilaginous disc, which divides joint cavity into two compartments. If you continue browsing the site, you agree to the use of cookies on this website. windowOpen = window.open( jQuery( this ).attr( 'href' ), 'wpcomgoogle-plus-1', 'menubar=1,resizable=1,width=480,height=550' ); • Features • Branches of external carotid artery to scalp, • Branches of internal carotid artery to scalp.
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