Longissimus Capitis O, I, A
Origin: By tendons from the posterior surfaces of the transverse processes of T1 to T5
Insertion: Posterior margin of the mastoid process of the occipital bone
Actions: Extension of the head and cervical spine
Innervation: Dorsal primary rami of C4 to T5
Blood Supply: Descending branches of the occipital artery
Primary Actions of the Longissimus Capitis
1. Extension of the head and cervical spine when acting bilaterally
Agonists:
-
Spinalis capitis
- Splenius capitis
- Semispinalis capitis
- Sternocleidomastoid (posterior fibers)
Antagonists:
-
Longus capitis
- Sternocleidomastoid (anterior fibers)
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Secondary Actions of the Longissimus Capitis
2. Assists with ipsilateral rotation of the head and cervical spine when acting unilaterally
Agonists:
-
Rectus capitis posterior major
- Obliquus capitis inferior
Antagonists: same muscles on contralateral side
-
Rectus capitis posterior major
- Obliquus capitis inferior
Information about cause and effect of Longissimus Capitis pain: Longissimus Capitis Muscle: Head, Ear, Eye and Neck Pain
An excellent book for those beginning the study of anatomy. Coloring helps memory retention.
For intermediary anatomy students learning skeletal and muscle structure.
For beginning and intermediary anatomy . Muscle overlays on the human body. Excellent visuals!