#MuscleMonday! This is Splenius Capitis and Splenius Cervicis.

This is the Splenius Capitis.

It originates from the lower half of Nuchal ligament (C4-C6) and spinous process of C7-T3.

It inserts along the Superior Nuchal line, Mastoid process, and rough surface adjoining occipital bone.

The primary functions are:

  1.  Bilaterally: extend the head backwards.
  2. Unilaterally: lateral flexion of the head and neck.
  3. Unilaterally: rotation the head to the same side.

This is the Splenius Cervicis.

It originates from the spinous processes of T3 to T6.

It’s insertion is the posterior tubercles of transverse processes of C1 to C3.

The primary functions are:

  1. Bilaterally: extend the head back.
  2. unilaterally: laterally flex the neck to one side.
  3. Unilaterally: rotate the head to the same side.

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