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31 Cards in this Set
- Front
- Back
what are the different planes for C1-C6?
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- C1: occlusal plane
- C2: angle of the mandible - C3: hyoid bone - C4/5: thryoid cartilage - C6: cricoid cartilage |
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what membrane is inbetween the thyroid & cricoid cartilage?
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- thyrohyoid membrane
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what nerve runs with the external jugular?
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- great auricular nerve
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what are the 4 sections of the anterior triangle?
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1) mental triangle
2) submandibular triangle 3) carotid triangle 4) muscular triangle |
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what does the stylohyoid muscle body split over?
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- splits over the posterior belly of digastric which has the intermediate tendon running between it
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where does the nerve to mylohyoid come from? what does it supply?
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- inferior alveolar from V3 gives off the nerve to mylohyoid (anterior belly digastric & mylohyoid)
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what nerve runs close to the inferior alveolar on the inside the mandible?
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- lingual nerve from V3
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what are the actions of the thyrohyoid?
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- can depress or elevate depending on which muscle is fixed
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what line on the thyroid cartilage do the sternothyroid & thyrohyoid attach to?
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- oblique line
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which part of the ansa cervicalis innervates the superior & inferior belly?
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- superior belly is innervated by superior portion of C1/2
- inferior belly is innervated by inferior portion C2/3 |
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C1 via the hypoglossal nerve innervates what muscles?
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- geniohyoid
- thyrohyoid |
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what is the descendens hypoglossi & cervicalis & what do they innervate?
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- superior portion ansa cervicalis is descendens hypoglossi and innervates superior belly omohyoid & sternohyoid
- inferior portion of ansa cervicalis is descendent hypoglossi innervates inferior belly omohyoid & sternothyroid |
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what does ansa cervicalis wrap around?
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- internal jugular vein
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who does the cervical branch of CNVII innervate?
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- stylohyoid & posterior belly of digastric
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what are the branches of the thyrocervical trunk?
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- suprascapular, transverse cervical, inferior thyroid
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what is the relationship of the inferior thyroid artery & recurrent laryngeal?
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- recurrent laryngeal goes right under the inferior thyroid artery
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how do the subclavian artery & vein lie in relationship to the anterior scalene?
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- vein lies anterior to anterior scalene so not subject to compression
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who is more medial, the vagus or phrenic nerve?
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- vagus is more medial
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how do the internal & external carotid form anastomoses?
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- supraorbital branch of internal carotid anastomoses with the external carotid
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what are the branches of the external carotid?
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- Superior thyroid
- Ascending pharyngeal - Lingual - Facial - Occipital - Superficial temporal - Maxillary |
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what is the difference between the carotid bodies and sinus? who does sensory to this?
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- carotid body: chemoreceptors
- carotid sinus: baroreceptors - glossopharyngeal (IX) |
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who makes up the circle of willis?
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- vertebral arteries come together to form the basilar --> meet up with posterior cerebral arteries --> posterior communicating meets up with middle cerebral & internal carotid --> meets up with anterior cerebral
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what does the inferior bulb of IJV do?
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- it is a valve at the inferior bulb of IJV & prevents relax
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what are the lymph nodes of the head & where do they drain?
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- occipital, mastoid, parotid, submandibular, submental
- all drain into deep cervical nodes (lie along IJV) - superficial cervical nodes (lie alone EJV) |
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where do most of the lymph nodes in the head drain to before the deep cervical?
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- jugulo-digastric node
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what is virchow's node?
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- supraclavicular node enlarged in gastric cancer or abdominal pathology
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what is the thyroid drainage?
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- superior & middle drain into the internal jugular
- inferior drains into the braciocephalic |
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how does the thyroid gland develop & what is the pathology associated with it?
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- thyroid gland develops at base of tongue (foramen cecum of tongue) and migrates down
- can end up with thyroglossal cyst if the thyroglossal duct does not normally regress |
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what are tracheotomy & tracheostomy?
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- tracheotomy: procedure that creates surgical opening in cervical trachea
- tracheostomy: creation of permanent or semi-permanent opening in trachea |
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what is cricothyrotomy?
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- make incision in cricothyroid cartilage
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what are the 3 parts of the subclavian?
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1) vertebral artery, internal thoracic, thyrocervical trunk
2) costocervical trunk (superior intercostal, deep cervical artery) 3) dorsal scapular |