Anterior Neck, Neck Triangles, and its contents Flashcards
where in relation to the subclavian vein is the phrenic nerve
lateral
where in relation to the subclavian vein is the vagus nerve
medial
what cranial nerve is the vagus
cranial nerve 10
what cranial nerve is the spinal accessory nerve
cranial nerve 11
what 2 muscles connect to the mastoid process
longissimus capitis
sternocleidomastoid
what is the adam’s apple
thyroid cartilage
what are the 2 heads of the sternocleidomastoid
sternal and clavicular
what are the 3 regions of the neck
anterior cervical triangle
lateral cervical triangle
posterior cervical triangle
what is torticollis
“wryneck”
shortening of the SCM
ipsilateral side bend with a contralateral head rotation up
what nerve innervates the platysma
facial nerve
what cranial nerve is the facial nerve
cranial nerve 7
what are the 4 suprahyoids
mylohyoid
stylohyoid
geniohyoid
digastric
what are the 4 infrahyoids
thryohyoid
sternothyroid
omohyoid (superior and inferior)
sternohyoid
facial sling
turns the omohyoid 90* and divides it into superior and inferior regions
what are the 4 parts of the anterior cervical triangle
submandibular
submental
carotid
muscular
contents of the carotid triangle
carotid artery
internal jugular vein
what are the 2 carotid bifurcation receptors
carotid body
carotid sinus
what does the carotid sinus do
it is a baroreceptor: senses pressure in the artery
what does the carotid body do
it is a chemoreceptor: senses neurotransmitter/hormones in artery
ansa cervicalis and what does it innervate
c1-5
most innervate the hyoid muscles
what cervical level is the hyoid at
C3/4
what cervical level does bifurcation occur at
C4
what cervical level is the thyroid cartilage located
C5/6
what are the 3 parts of the subclavian artery and what divides it
medial, posterior, lateral
anterior scalene
what are the 4 arteries in the lateral cervical triangle
common carotid
vertebral
subclavian
brachiocephalic trunk
what are the 2 parts of the lateral cervical triangle
occipital triangle
omoclavicular triangle
what does a Q collar do
prevents concussions with compression to create backflow of the jugular vein
what are the 4 parts of the posterior region of the neck
upper trap
levator scap
splenius cervicis
omohyoid- inferior belly
where does the omohyoid attach to
the scapula
what 2 arteries does the brachiocephalic trunk split into
subclavian artery
common carotid artery
what is the parent structure of the common external carotid artery
common carotid artery
what is the parent structure of the subclavian artery
brachiocephalic trunk
what spinal levels does the phrenic nerve consist of
C3
C4
C5
what nerve can get damaged with a clavicular fracture
suprascapular nerve
where are neck vessels the biggest
at the root of the neck
is vagus nerve motor or sensory
sensory
cervical plexus is which rami
ventral/anterior rami
palsy
spinal accessory nerve disfunction that causes traps and SCM to stop working
how can palsy occur
trauma
surgical mistake
tumors
jugular foramen fractures
what movements are difficult in palsy and why
shoulder shrugging and upward scap rotation because traps and SCM are gone
what 3 muscles make up the prevertebral neck
rectus capitis anterior
longus capitis
longus colli
what muscles of the prevertebral neck help the OA joint in head flexion
rectus capitis anterior
longus capitis
