bones involved in back muscle attachment
-clavicle
occipital cervical thoracic lumbar spine spinous process laminae transverse process paired sacrum hip bone acromion scapular spine crest upper lip lower lip medial border intertubercular groove
what are the superficial muscles of the back
trapezius latissimus dorsi levator scapulae rhomboid minor rhomboid major
trapezius
origin:
- _____ skull (_____)
- _____ of all _____ via _____ (_____)
- _____ of all _____
insertion:
action:
innervation
the insertion of the trapezius embraces the origin of the _____
the _____ is one of the _____ cranial nerves; it is _____
posterior occipital bone spinous processes cervical vertebrae ligament ligamentum nuchae spinous processes vertebrae lateral third clavicle acromion crest spine scapula superior lip upward rotation scapula inferior angle laterally elevation scapula lateral clavicle depression scapula lateral clavicle CN XI accessory nerve ventral rami C3 and C4 deltoid accessory nerve 12 CN XI
latissimus dorsi origin: -\_\_\_\_\_ -\_\_\_\_\_ of the \_\_\_\_\_ -\_\_\_\_\_ of the \_\_\_\_\_ and \_\_\_\_\_ --via \_\_\_\_\_ -\_\_\_\_\_
insertion
-_____ or _____ of the _____
action
innervation:
-_____
lower 3 or 4 ribs spinous processes lower 6 thoracic vertebrae spinous processes lumbar and sacral vertebrae aponeurosis iliac crest intertubercular groove sulcus humerus adduction arm shoulder joint extension arm shoulder joint medial rotation arm shoulder joint thoracodorsal nerve
levator scapulae
origin:
-_____ of _____
insertion:
-_____ of the _____, _____ to the _____
action:
-_____
innervation:
-_____
transverse processes of CV1 to CV4 medial border scapula superior scapular spine elevation of the scapula ventral rami of C3 and C4
rhomboid minor
origin:
-_____
insertion:
-_____ of the _____, _____ the _____
action:
-_____
innervation:
-_____
spinous processes of CV7 and TV1 medial border scapula at scapular spine adduction of the scapula dorsal scapular nerve
rhomboid major
origin:
- _____
insertion:
-_____ of the _____, _____ to the _____
action:
-_____
innervation:
-_____
spinous processes of TV2 to TV5 medial border scapula inferior scapular spine adduction of the scapula dorsal scapular nerve
what are the muscles of the deep back
erector spinae (sacrospinalis) splenius transversaospinal group -semispinalis --semispinalis capitis (biventer cervicis) --semispinalis cervicis --semispinalis thoracis -multifidus -rotatores --longus --brevis suboccipital muscles
erector spinae
three largest above 12th rib spinalis centimeter wide spinous processes longissimus skull longest iliocostalis ilium ribs postural extending vertebral column segmental dorsal rami
splenius
neck splenius capitis ligamentum nuchae CV7-TV4 skull splenius cervicis TV3-TV6 CV1-CV3 origin insertion head cervical column same head extend segmental dorsal rami
transversospinal group
-the transversospinal group includes the following muscles:
_____, _____, _____
-generally, all the muscles in this group originate from the _____ and insert into the _____ of certain vertebrae _____ it
semispinalis multifidus rotatores transverse process spinous process above
semispinalis (courses _____ vertebral segments)
4-6 upper half vertebral column semispinalis capitis biventer cervicis tendon semispinalis cervicis deep semispinalis thoracis inferior thoracic exends head rotates same vertebrae opposite segmental dorsal rami
multifidus (courses _____ vertebral segments)
2-4 lumbar region erector spinae rotate vertebral column opposite segmental dorsal rami
rotatores (courses _____ vertebral segments)
1-2 thoracic region semispinalis thoracis laminae spines transverse processes deepest rotatores longus rotatores brevis rotate vertebral column opposite segmental dorsal rami
suboccipital muscles
-_____ suboccipital muscles lie in the _____; three of these make up the _____
a. _____
b. _____
c. _____
d. _____
four deep neck suboccipital triangle rectus capitis posterior major recuts capitis posterior minor (not part of triangle) obliquus capitis inferior obliquus capitis superior