neck muscles, myology Flashcards
what is the o i for SCM?
manubrium and medial 1/2 of clavicle to mastoid process
action of sterno-cleido mastoid?
head flexion, and unilaterally, side bendy and sontra rotation
innervation of scm?
cn X! and ventral rami of c2 and c3
scalenus anterior o i
anterior portion of transverse process of c3-c6, scalene tubercle of anterior surface of 1st rib
action of scalenus anterior
laterally flex the c spine, access inspiration
scalenus anterior n
ventral rami c4-c6
scalenus medius i o
post tubercle of transverse process c2-c7 to superior surface of 1st rib behind subclavian groove
scaleneus posterior i o
post tubercles of transverse process c4-c6 to lateral superior surface of 2nd rib
action of both scalenus medius and scalenus posterior
laterally flex neck, rotate, elevate rib
what two important structures pass between the anterior and middle scalenes?
brachial plexus and subclavian artery
longus coli o i
bodies of c5-t3 to bodies of c2-c4 are linear, oblique fibers from bodies/transverse process of lower vertebrate to c5,c6 vertebrae (obique)
longus coli action and n
bilaterally flexes cervical v, and side bend, c2-c6 ventral rami
longus capitus
ant tubercles of transverse processes of c3-c6 to inferior surface of basilar portion of occipital bone
action of longus capitus
flex skull, laterally sidebend
rectus capitis anterior o, i a n
lateral mass of atlas, base of occipital bone anterior to occipital condyle, flexes head, anterior rami of c1,2
rectus capitus lateralis o, i, a n
transverse process of the atlas, jugular process of the occipital bone, flexes stablizes, anterior rami c1, c2
what does the lesser occipital nerve innervate
skin of neck and scalp posterior to ear (c2)
what does the great auricular nerve innervate
parotid, mastoid, ear regions (c2/c3)
what does the transverse cervical nerve innervate?
lateral and anterior neck, c2, c3
what does the supraclavicular nerve innervate?
clavicle, shouldre rebion, c3, c4
what is the ansa cervicis?
loop, c20c3, motor branches to infrahyoid– hypoglossal
what doese the phrenic nerve come off of?
c3-5
what are the four suprahyoids?
stylohyoid, digastric, geniohyoid, mylohyoid
thyrohyoid, describe action
stablizes/depress hyoid, if hyoid is fixed it will enlarge the larynx ie for singing
role and innervation of the infrahyoids
stablize the hyoid, ansacervisis, except thyrohyoid
name the muscles involved in the posterior occipital triangle
rectus capitis posterior major, rectus capitis posterior minor, obliqus capitus sup, and inf
rectus capitis posteiror major o i
spinos process of axis- lateral portion of inferior nuchal line (n suboccipital post ram c1)
rectus capitus posterior minor o i
tubercle of the posterior arch of atlas- medial protion of inferior nuchal line (suboccipitla n, psot ram c1)
obliqus capitis superior o i
transverse process atlas- occipital bone between superior and inferior nuchal lines (n suboccipital post ramus c1)
obliqus capitus inferiro o i
spinous process axis - transverse process atals