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27 Cards in this Set
- Front
- Back
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what is the course of accessory nerve (XI)
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spinal roots arise from C1-7 and ascend between dorsal and vental roots
cranial roots arise in medulla go through foramen magnum and then jugular foramen |
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what muscles does ansa cervicalis innervate?
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infrahyoid muscles: omohyoid, sternohyoid, sternothyroid (NOT thyrohyoid)
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what innervates thyrohyoid muscle?
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C1 ventral ramus via hypoglossal n.
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what makes up the phrenic nerve?
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C3,4,5 ventral rami
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what is the course of the phrenic nerve?
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anterior surface of anterior scalene, between subclavian artery and vein
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what are the branches of subclavian artery?
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1. vertebral a.
2. thyrocervical trunk 3. internal thoracic a. 4. costocervical trunk 5. dorsal scapular a. |
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what are the branches of thyrocervical trunk?
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1. inferior thyroid
2. transverse cervical a. 3. suprascapular a. |
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what is the carotid body? Location? Innervation?
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chemoreceptor (O2, CO2)
located at the bifurcation glossopharyngeal n. (CN 9) |
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what is the carotid sinus? Location? Innervation?
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pressoreceptor (baroreceptor)
located in wall of internal carotid glossopharyngeal n. (CN 9) |
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what are the contents of carotid sheath?
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vagus n.
common carotid a. internal jugular v. lymph nodes |
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what are the branches of external carotid a. ?
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1. superior thyroid
2. lingual 3. facial 4. ascending pharyngeal 5. occipital 6. posterior auricular 7. maxillary 8. superficial temporal |
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superior border of thyroid cartilage corresponds w/
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C4 - carotid bifurcates
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cricoid cartilage corresponds w/
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C6 - start of trachea
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tip of hyoid bone corresponds w/
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C3 - CN XII (12- hypoglossal)
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what supports the atlantooccipital joint?
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anteriorly - tectorial membrane (posterior longitudinal ligament)
posteriorly - atlantooccipital membrane |
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what supports the atlantoaxial joint?
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transverse ligament of atlas and alar ligaments
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what innervates the scalene muslces?
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ventral rami of cervical spinal nerves
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what innervates slytohyoid and posterior belly of digastric?
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facial nerve (CN VII)
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what innervates mylohyoid and anterior belly of digastric?
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nerve to mylohyoid
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what fascia encloses the visceral compartment?
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pretracheal fascia
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which fascia evaginates to form the axillary sheath?
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prevertebral fascia
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in which fascial sheath does the accessory nerve lie?
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b/w investing and prevertebral fascia
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in which fascial sheath does the sympathetic trunk lie?
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in the retropharyngeal space
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what is the path of lymphatic drainage of the neck?
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deep cervical -> jugular lymph trunks -> R lymphatic duct and thoracic duct
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in the cervical region the sympathetic trunk and ventral rami are connected by
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gray rami communicantes (postganglionic sympathetic fibers)
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where are all the cell bodies of postganglionic sympathetic neurons innervating the head located?
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superior cervical ganglion
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which ganglion connects to T1 ventral rami via gray and white rami communicates?
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stellate ganglion
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