Deep muscles of the neck and back

Question 1

Splenius capitis origin?

Answer 1

Ligamentum nuchae, spinous process of C7 and upper thoracic vertebrae (T1-T4)

Question 2

Splenius capitis insertion?

Answer 2

Mastoid process of temporal bone, occipital bone

Question 3

Splenius capitis actions?

Answer 3

Unilateral action, rotate head to same side as the muscle
Bilateral action, extends head and neck

Question 4

Splenius capitis innervation?

Answer 4

Posterior rami of cervical spinal nerve

Question 5

Splenius cervicis origin?

Answer 5

Spinous processes of upper thoracic vertebrae (T3-T6)

Question 6

Splenius cervicis insertion?

Answer 6

Transverse processes of C1-C3 vertebrae

Question 7

Splenius cervicis actions?

Answer 7

Unilateral action, rotate head to same side as the muscle
Bilateral action, extends head and neck

Question 8

Splenius cervicis innervation?

Answer 8

Posterior rami of cervical spinal nerve

Question 9

Iliocostalis origin?

Answer 9

Ilium, sacrum, lumbar vertebrae

Question 10

Iliocostalis insertion?

Answer 10

Ribs, cervical vertebrae

Question 11

Iliocostalis action?

Answer 11

Extends vertebral column, maintains posture

Question 12

Iliocostalis innervation?

Answer 12

Posterior rami of spinal nerves

Question 13

Longissimus origin?

Answer 13

Ilium, sacrum, lumbar vertebrae

Question 14

Longissimus insertion?

Answer 14

Mastoid process of temporal bone, cervical and thoracic vertebrae

Question 15

Longissimus action?

Answer 15

Extends head and vertebral column, maintains posture

Question 16

Longissimus innervation?

Answer 16

Posterior rami of spinal nerves

Question 17

Spinalis origin?

Answer 17

Lumbar vertebrae

Question 18

Spinalis insertion?

Answer 18

Spinous processes of cervical and thoracic vertebrae

Question 19

Spinalis action?

Answer 19

Extends vertebral column, maintains posture

Question 20

Spinalis innervation?

Answer 20

Posterior rami of spinal nerves