root of the neck Flashcards
right subclavian artery branches off of what
brachiocephalic trunk
left subclavian artery branches off what
arch of aorta
subclavian artery runs posterior to
anterior scalene m
continuing on, the subclavian artery crosses ___ and becomes ___
crosses RIB 1 and becomes axillary arteries
branches of subclavian artery
1) vertebral a
2) internal thoracic a
3) thyrocervical trunk
4) costocervical trunk
vertebral artery
- most medial
- enters foramen in transverse process of c6 and goes through foramina of c5 to c1
where does the vertebral artery eventually pass through
foramen magnum
what does the vertebral a supply
- medulla
- spinal cord
- cerebellum
- dura of posterior cranial fossa
internal thoracic artery path
-goes down towards thoracic cavity
internal thoracic artery supplies
- diaphragm
- upper anterior abdominal wall
- anterior intercostal space
thyrocervical trunk branches
- inferior thyroid a
- transverse cervical a
- suprascapular a
path of inferior thyroid a
- ascends anterior to anterior scalene m and turns medially
- crosses anterior to vertebral a
inferior thyroid a supplies
- lower portion of thyroid and parathyroid glands
- larynx below vocal cords via inferior laryngeal a
- trachea
- esophagus
- lower aspect of pharyngeal wall (via pharyngeal branches)f
branches of inferior thyroid a
ascending cervical a
inferior laryngeal a
transverse cervical artery path
- laterally and anteriorly across anterior scalene m and phrenic n
- goes through brachial plexus
branches of transverse cervical a
- superficial cervical a
- dorsal scapular a
suprascapular a path
- anterior scalene m
- phrenic n
- 3rd part of subclavian a
- brachial plexus
costocervical trunk
-2nd part of subclavian a
branches of costocervical trunk
- supreme intercostal a
- deep cervical a
external JV drains into what
subclavian v
anterior JV drains into what
either external JV or subclavian v
internal JV and subclavian v join to form what
right brachiocephalic vein
phrenic n
-branch of cervical plexus (c3 to c5)
phrenic n runs along
anterior surface of anterior scalene m
phrenic n passes between
subclavian a and v
phrenic n provides motor and sensory innervation to what
diaphragm
medial to lateral list of structures near vagus nerve
medial to lateral:
common carotid a, vagus n, internal JV, phrenic n
branch of vagus n
recurrent laryngeal n
recurrent laryngeal n supplies
- trachea
- esophagus
- mm of larynx except for cricothyroid m
right recurrent laryngeal n path
-starts at root of neck and runs under subclavian
left recurrent laryngeal n path
-starts in thorax and runs under aorta arch
runs along body from skull to coccyx
sympathetic trunk
sympathetic preganglionic fibers emerge from what level of spine
T1 (go to highest ganglion in neck)
where do synapses of sympathetic fibers to the head occur
superior cervical ganglion
branches of superior cervical ganglion pass to
- internal and external carotid a
- c1 to c4
- heart
branches of middle cervical ganglion pass to
- c5 to c6
- heart
- per-arterial plexuses to thyroid gland
branches of inferior cervical ganglion
- c7 to c8
- vertebral a
- heart
