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44 Cards in this Set
- Front
- Back
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Innervation/action of thyrohoid?
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C1 fibers in hypoglossal nerve
A: elevate the larynx |
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4 infrahyoid muscles?
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sternohyoid, omohyoid, sternothyroid, thyrohyoid
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Origin, Insertion, Action of sternohyoid?
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O: within thorax behind manubrium
I: hyoid bone A: depressor of larynx |
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Origin, Insertion, Action of omohyoid?
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O: scapula near suprascapular notch
I: hyoid bone A: depressor of the larynx |
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Origin, Insertion of sternothyroid?
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O: posterior manubrium below origin of sternohyoid
I: oblique end of thyroid cartilage |
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O, I, A of thyrohyoid?
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O: Oblique line of thyroid cartilage
I: hyoid bone A: elevator of the larynx |
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Where is the ansa cervicalis found?
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anterior surface of carotid sheath
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Path/muscles innervated by C1?
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C1 fibers travel with hypoglossal nerve to innervate thyrohyoid & glenohyoid; then become descendens hypoglossi (sup root) to innervate superior belly of omohyoid
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Path/muscles innervated by C2/C3?
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Form infr root/descendens cervicalis; inferior belly of omohyoid, sternohyoid, sternothyroid
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Origin, Insertion, nerve, action of digastric muscle?
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O: medial aspect of mastoid process
I: inner surface of mandible (near midline) A: elevator of larynx innervation: Posterior belly: facial nerve Anterior belly: trigeminal nerve |
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Origin, insertion, action, path, & innervation of stylohyoid?
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O: styloid process
I: hyoid bone Action: elevator of larynx Path: splits into 2 by posterior belly Innervation: facial nerve |
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Origin, Insertion, Action, & nerve supply of mylohyoid?
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O: mylohyoid line of mandible
I: hyoid bone A: forms muscular floor of mouth/elevates larynx Innervation: trigeminal nerve |
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What CN is trigeminal nerve?
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CN5
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Origin, Insertion, location, and innervation of geniohyoid?
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O: inferior genial tuberlce of mandible
I: body of hyoid location: above mylohyoid Innervation: C1 |
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Innervation of hyglossus?
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CN 12 - hypoglossal
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Contents of carotid sheath?
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Internal jugular vein, vagus nerve, and common carotid
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2 most inferior branches of external carotid artery?
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superior thyroid & superior laryngeal
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path of superior laryngeal artery?
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travels with internal branch of superior laryngeal nerve through thyrohyoid membrane
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2nd and 3rd branches of external carotid and their path?
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acsending pharyngeal; rises on posterior side and lies on wall of pharynx
lingual artery - anterior branch that passes deep to hyoglossus muscle immediately above hyoid bone |
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3rd set of 2 arteries off external carotid and their path?
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Facial artery - anterior branch; may come off with lingual artery; passes deep to submandibular gland; then passes external to mandible and enters the face
Occipital - arises from posterior side; travels with greater occipital nerve |
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2 terminal branches of external carotid and where they occur?
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maxillary artery & superficial temporal artery
divides in parotid gland |
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branches of facial artery?
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glandular, submental, tonsilar & ascending palatine branches
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3 borders of muscular triangle?
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superior belly of omohyoid, median line, & anterior border of SCM
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Mylohyoid nerve sends 2 branches to?
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mylohyoid muscle & anterior belly of digastric muscle
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relationship of hypoglossal nerve, lingual nerve, and lingual artery in triangle?
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hypoglossal & lingual nerves - b/w mylohyoid & hyoglossus
lingual artery - deep to hyoglossus uscle |
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4 structures between hyoglossus & mylohyoid?
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sublingual duct, submandibular duct, lingual nerve and hypoglossal nerve
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Where does the common carotid artery divide?
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level of upper border thyroid cartilage
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what accompanies the nerve to the mylohyoid?
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submental branch of facial artery
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where does the external common carotid divide into its terminal branches?
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parotid gland
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where is the deep part of the submandibular gland?
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between the mylohyoid and hyoglossus muscles
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path of submandibular duct?
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from deep part of gland; passes forward and medially between mylohyoid and hyoglossus muscles and opens in the the oral cavity
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where does the submandibular duct open into oral cavitty?
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sublingual papilla
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branches of mylohyoid nerve go to?
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mylohyoid bone & anterior belly of digastric muscle
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path of internal jugular vein as it descends from skull?
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moves from posterior to lateral of internal carotid
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what nerve supplies the carotid sinus?
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CN9 - glossopharyngeal
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4 branches of vagus nerve?
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1) Sup/Inf. cervical cardiac nerves - visceral branches to cardiac plexus
2) Superior laryngeal nerve 3) pharyngeal branch 4) recurrent laryngeal |
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branches of superior laryngeal nerve & purpose?
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external branch to cricothyroid muscle (has motor fibers)
internal branch - passes through thyrohyoid membrane (sensory) |
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path of pharyngeal branch?
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passes between carotid arteries
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Name of CN11 and muscles it innervates?
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Accessory nerve; SCM & trapezius
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3 arteries supplying thyroid?
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sup. thyroid, inf. thyroid & thyroid isthmus (comes from right common carotid)
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3 veins of thyroid and where the drain?
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superior & middle drain to internal jugular
inferior thyroid vein - brachiocephalic vein |
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6 components of superior cervical ganglion?
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1) internal carotid nerve & plexus
2) superior cervical cardiac nerve 3) communications with CN9, CN10, & CN12 4) gray communicating rami with C1-4 5) pharyngeal branches 6) branches to external carotid artery |
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2 components of middle cervical ganglion?
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1) middle cervical cardiac nerve
2) gray communicating rami to C5 & C6 |
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2 components of inferior cervical ganglion?
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1) inferior cervical cardiac nerve
2) gray communicating rami to C7 & C8 |
