Muscle Chart: Splenius Group

Question 1

Splenius Capitis

Origin, Insertion, Innervation, Blood Supply

Answer 1

Origin: Spinous processes C7-T4 and inferior 1/3 of ligamentum nuchae

Insertion: Mastoid process and lateral portion of superior nuchal line

Innervation: Dorsal rami of cervical spinal nerves

Blood Supply: Deep cervical artery to the capitis

Question 2

Splenius Capitis Movements

Answer 2

Unilaterally: Rotate head and neck to same side and laterally flex head and neck

Bilaterally: Extend head and neck

Question 3

Splenius Cervicis

Origin, Insertion, Innervation, Blood Supply

Answer 3

Origin: Spinous processes T3-T6

Insertion: Transverse processes of C1-C3

Innervation: Dorsal rami of cervical spinal nerves

Blood Supply: Occipital artery to the cervicis

Question 4

Spenius Cervicis Movements

Answer 4

Unilaterally: rotate head and neck to same side and laterally flex the head and neck

Bilaterally: Extend head and neck