Muscle Chart Flashcards
erector spinae origin
iliac crest, sacrum, spinous process of lower lumbar vertebrae and sacrum, supraspinous ligament, sacrospinous ligament
erector spinae actions
extends and laterally bends the trunk, neck, and head
erector spinae innervation
dorsal primary rami of spinal nerves
erector spinae cervical artery
occipital, deep cervical, vertebral
erector spinae thoracic artery
posterior intercostal artery
erector spinae abdominal artery
subcostal, lumbar
erector spinae sacral artery
lateral sacral artery
spinalis insertion
spinous processes of superior vertebral levels (thoracic and midcervical), cranium
spinalis action
extends and laterally bends trunk and neck
spinalis innervation
dorsal primary rami of spinal nerves
spinalis cervical artery
occipital, deep cervical, vertebral
spinalis thoracic artery
posterior intercostal artery
spinalis abdominal artery
subcostal, lumbar
spinalis sacral artery
lateral sacral artery
longissimus insertion
transverse process of superior vertebral levels (thoracic and cervical) and mastoid process
longissimus actions
extends and laterally bends the trunk, neck, and head
longissimus innervation
dorsal primary rami of spinal nerves
longissimus cervical artery
occipital, deep cervical, vertebral
longissimus thoracic artery
posterior intercostal artery
longissimus abdominal artery
subcostal, lumbar
longissimus sacral artery
lateral sacral artery
iliocostalis insertion
angles of the lower ribs, cervical transverse process
iliocostalis actions
extends and laterally bends the trunk and neck
iliocostalis innervation
dorsal primary rami of spinal nerves
iliocostalis cervical artery
occipital, deep cervical, vertebral
iliocostalis thoracic artery
posterior intercostal artery
iliocostalis abdominal artery
subcostal, lumbar
iliocostalis sacral artery
lateral sacral artery
multifidus origin
sacrum, ilium, transverse processes of T1-T12 and articular processes of C4-7
multifidus insertion
spinous processes 2-4 vertebral levels superior to their origin
multifidus insertion
spinous processes 2-4 vertebral levels superior to their origin
multifidus action
extend and laterally bend trunk and neck, rotate contralaterally, stabilize spine
multifidus innervation
dorsal primary rami of spinal nerves C1-L5
multifidus cervical artery
occipital, deep cervical a. and vertebral a
multifidus thoracic artery
posterior intercostal aa., subcostal aa., lumbar a
multifidus lumbar artery
lateral sacral aa
rotatores origin
transverse processes
rotatores insertion
long rotatores: spinous processes 2 vertebrae above origin; short rotatores: spinous processes 1 vertebrae above origin
rotatores actions
Stablize and extend spine: rotates the vertebral column contralaterally
rotatores innervation
dorsal primary rami of spinal nerves C1-L5
rotatores artery
supplied segmentally by: deep cervical a., posterior intercostal aa., subcostal aa., lumbar aa.
semispinalis origin
transverse processes of C7-T12
semispinalis insertion
capitis: back of skull between nuchal lines; cervicis & thoracis: spines 4-6 vertebrae above origin
semispinalis action
extends the trunk and laterally bends the trunk, rotates the trunk
to the opposite side
semispinalis innervation
dorsal primary rami of spinal nerves C1-T12
semispinalis cervical artery
occipital, deep cervical a, and vertebral a
semispinalis thoracic artery
posterior intercostal aa, subcostal aa
splenius origin
ligamentum nuchae and spinous process of C7-T6
splenius insertion
capitis: mastoid process & superior nuchal line ; cervicis: posterior tubercles of transverse process of C1-C3 vertebrae
splenius action
head and neck Uilaterally: laterally flexes the neck and head, rotates head ipsilaterally
splenius innervation
dorsal primary rami of spinal nerves C2-C6
splenius artery
occipital a; deep cervical a.
splenius capitis origin
ligamentum nuchae and spinous process of C7-T4 vertebrae
splenius capitis insertion
mastoid process and superior nuchal line