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