Intrinsic Back Muscles

Question 1

Splenius capitis attachemnts

Answer 1

Origin-ligamenum nuchae and sponos prcoess of C7 to T3

Insert-lateral superior nuchal line of occipital bone and mastoid process of temporal bone

Question 2

Spleniuscervicus attachents

Answer 2

Origin-spinous processes of T3 to T6

Insert-transverse processes of C1 and C2

Question 3

Innervation of spleens captious and splines cervicus

Answer 3

Spinal nerves C1-C6

Posterior Ram, lateral branches

Question 4

Splenius capitis and splenius cervicis actions

Answer 4

bilaterally extend cervical spine and head

Unilaterally act to flex and rotate the had to the same side

Question 5

Semispinalis attachments

Answer 5

origen-transvere and articular processes of C4 to T7

attaches to occipital bone between superior and inferior nuchal lines

Question 6

semispinalis innervation

Answer 6

spinal nervves (posterior rami)

Question 7

semisinalis capitits and cervicis

Answer 7

capitis is always higher (there is a semispinalsis and spenius cap and cerv as well)

splenius are on top of semispinaialis
-cervicis is lower than capitis

Question 8

semispinalis actions

Answer 8

bilaterally extend track and cervical spines and head as well as stabilizing craniovert joints

unilaterrly to bend had, cervical and thoracic spines to same side, and rotate them to opposite side

Question 9

Erector spinae parts and which is most superficila/deep

Answer 9

illiocostalis, longissius, spinalis

iliocostalis, longissimus, spinalis
superficial deep

Question 10

Splenuys capitis and cerviciss innervation

Answer 10

spinal nerves C1-C6 (posterior rami, lateral branches)

Question 11

Erector spinae actions

Answer 11

Bilaterlly-extend spine

unilaterally-bend/rotate spine

Question 12

Erector spinae attachemts

Answer 12

start-Basically ribs or vertebrae

end-rib or vertebrae or mastoid process