⭐️Splenius Capitis

Question 1

Origin

Answer 1

SPs of C4-T4 (from C4-C6 via Ligamentum nuchae)

Question 2

Insertion

Answer 2

Mastoid process
Lat 1/3 of superior nuchal line of occipital bone

Question 3

Function

Answer 3

Ext of head at atlanto-occipital joint
Ext of neck at spinal joints
Lat flex of head
Lat flex of neck
Ipsilateral rot of head
Ipsilateral rot of neck

Question 4

Nerve

Answer 4

Dorsal rami spinal nerves at corresponding level