Superficial Layer of Intrinsic Back Muscle

Question 0

Splenius Capitas (Insertion)

Answer 0

fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

Question 1

Splenius Capitas/ cervicis (origin)

Answer 1

Origin:

Arise from the Nuchal Ligament and Spinous Process of C7-T3 or T4 vertebrae

Question 2

Splenius Cervicis (Insertion)

Answer 2

tubercles of transverse processes of C1-C3or C4 vertebrae

Question 3

Splenius (Innervation)

Answer 3

Posterior rami of spinal nerves

Question 4

Splenius (Main Actions)

Answer 4

Acting alone: laterally flex neck and rotate head to side of active muscles
Acting together: extend neck and head