Question | Answer |
What is the origin for the trapezius | external occipital protuberance, middle 1/3rd superior nuchal line, nuchal line, sp c7-t12 |
What is the insertion for the trapezius | lateral 1/3rd of the clavicle, spine of scapula, acromion process |
What is the innervation for trapezius muscle | Spinal accessory nerve CN 11 ventral rami c3-c4 |
What is the origin for the latissimus dorsi? | T6-L5, iliac crest, ribs 8-12, sacrum, thoracolumbar fascia |
What is the insertion for the latissimus dorsi | Intertubercular groove of humerus |
What is the action of the trapezius | scapular elevation, scapular retraction, scapular depression, ipsilateral lateral flexion, head and neck extension |
What is the innervation of the latissimus dorsi | thoracodorsal nerve c6-c8 |
What is the action of the latissimus dorsi | internal rotation, adduction, extension |
what is the origin for the levator scapulae | posterior tubercles TP c1-c4 |
what is the insertion for the levitator scapulae | superior angle of the scapula |
what is the innervation for the levator scapulae | dorsal scapular c5 ventral rami c3-c4 |
what is the action of the levator scapulae | elevation, downward rotation, ipsilateral lateral flexion of neck |
rhomboid minor- origin | c7-t1 |
rhomboid minor- insertion | medial border of the scapula at the scapular spine |
rhomboid minor innervation | dorsal scapular c5 |
rhomboid minor action | elevation, retraction, downward rotation, helps fix scapular to thoracic cage |
rhomboid major origin | t2-t5 |
rhomboid major insertion | medial border of the scapula at the scapular spine |
what kind of muscles are the rhomboids and levator scapulae | intermediate extrinsic 2 |
serratus posterior superior muscle origin | ligamentum nuchae, sp c7-t3 |
serratus posterior superior muscle insertion | upper borders of ribs 2-5 |
innervation of serratus posterior superior muscle | 1-4 intercostal nerve ventral rami t1-t4 |
action of serratus posterior superior muscle | elevates 2-5th rib
deep inspriration |
what kind of muscles are the serratus posterior superior and serratus posterior inferior | deep extrinsic 3 |
serratus posterior inferior muscle origin | t11-l3 |
serratus posterior inferior muslce insertion | ribs 9-12 |
innervation of serratus posterior inferior muscle | 9-12 intercostal nerve ventral rami t9-t12 |
action of serratus posterior inferior muscle | deep expiration depresses the lower four ribs |
what are layers 1-3 innervated by | ventral rami |
splenius capitis muscles origin | ligamentum nuchae c7-t3 |
splenius capitis muscles insertion | mastoid process nuchal line lateral 3rd |
innervation of splenius capitis | dorsal rami c1-t1 |
action of spelenius capitis | b/l contraction causes head extension
u/l contraction causes ipsilateral rotation and ipsilateral lateral flexion |
spelnius cervicis muscles origin | t3-t6 |
splenius cervicis muscle insertion | tp c1-c3 |
spelenius cervicis muscle innervation | dorsal rami in area |
action of splenius cervicis | b/l contraction causes neck extension
u/l contraction causes ipsilateral rotation and ipsilater lateral flexion |
both splenius muscles are what | superficial intrinsic 4 |