Iliocostalis Thoracis Muscle
Longissimus Capitis Muscle
The longissimus capitis muscle is a long flat muscle on the side of the neck.
Attachments of Longissimus Capitis: Origin & Insertion
Origin: Transverse processes T1 – T5: articular processes of C4 or C5-C7 vertebrae.
Insertion: Posterior portion of the mastoid process of the temporal bone.
Actions of the Longissimus Capitis Muscle:
- Bilateral action extends and hyperextends the head.
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Nerves Supply to the Longissimus Capitis:
- Dorsal rami of the spinal nerves.