deep muscles of back Flashcards
splenius capitis PA
-nuchal ligament
- spinous process c7-t6
splenius capitis DA
-mastoid process
-superior nuchal line
splenius capitis nerve
posterior rami of spinal nerves
splenius capitis and cervicis MA
unilaterally flex and rotate head
bilaterally extend head/neck
splenius cercivis pa
nuchal ligament and spinous process c7-t6
splenius cervicis da
transverse process of c1-c4
erector spinae of back make up what layer of the back? (sup,inter,inf)?
intermediate
erector spinae layers (medial to lateral)
- spinalis
- longissimus
- iliocostalis
erector spinae muscle action
main extenders of the back, side bend (lateral flexion)
splenius capitis and cervicis purpose
social interaction, driving
spinalis PA
- thoracolumbar facia
- spinous process of T11&T12
extrinsics superficial muscles?
- lats
- trapezius
- levator
- rhomboids major and minor
extrinsics intermediate muscles?
- serratus post superior
- serratus post inferior
intrinsics superficial muscles?
- splenius capitis
- splenius cervicis
intrinsic intermediate muscles? (med 2 lateral)
- erector spinae
- iliocostalis
- longissimus
-spinalis
erector spinae: iliocostalis DA
- lower rib angles
- transverse process of cervical vertebrae
erector spinae: longissimus DA
- between rib tubercles
- transverse process of thoracic vertebrae
erector spinae: spinalis DA
- upper thoracic spinous process
- cranium
erector spinae pa
- thoracolumbar fascia
- spinous process of t11 & t12
iliocostalis sections (sup to inf)
- iliocostalis cervicis
- iliocostalis thoracis
- iliocostalis lumborum
longissimus sections
-longissimus CAPITIS (extends to mastoid process)
- longissimus thoracis
spinalis section
- spinalis CERVICIS
- spinalis thoracis
rotatores (brevis and longus) purpose
tai-chi & yoga
rotatores (brevis and longus) SUPERIOR attachment think!
spinous process of C2-Lumbar Vertebrae
rotatores (brevis and longus) INFERIOR attachment THINKKK
transverse process of thoracic vertabrae
purpose of rotatores (3)
- rotation
- extension of vertebral column
- proprioception
rotatores nerves
dorsal rami of spinal nerves
E.S. intercostalis PA
- thoracolumbar fascia
- spinous process of t11& t12
E.S. longissimus PA
- thoracolumbar fascia
- spinous process of t11 & t12
multifidis purpose
- rotate vertebral column
- extend vertebral column
- stabilize vertebrae during local movement
multifidis IA SSTAAMP
S - sacroiliac ligaments
S - sacrum
T - TP of T-1 & T-3
A - apouneurosis of erector spinae
M - mamillary aspects of lumbar vertebrae
P- PSIS (period siss)
multifidi purpose
deep postural muscles
tai chi and yoga
multifidi nerve
dorsal rami of spinal nerve
multifidi SA
thiccest in lumbar region
superomedially fibers 2-4 superior to PA
semispinalis (thoracis, cervicis, capitus) purpose
using a computer workstation, looking overhead
semispinalis MA
- extends head & thoracic side
- rotates contralaterally
semispinalis inferior attachment
- TP of C4 to T12
semispinalis SA
- fibers run superomedially occipital bone
- SP in T&C 4-6 segments
list the suboccipitals
- rectus capitis posterior major
- rectus capitis posterior minor
- obliquus capitis inferior
- obliquus capitis superior
suboccipital triangle is formed from what muscles
- obliquus capitis superior
- obliquus capitis inferior
- rectus capitis posterior major
suboccipital purpose
scanning computer monitor, reading a book
which suboccipitals rock and tilt head into extension?
- rectus capitis posterior major
- rectus capitis posterior minor
- obliquus capitis superior
which suboccipitals rotate the head?
- rectus capitis posterior minor
- ## obliquus capitis inferior