Semispinalis capitis

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Semispinalis capitis
Gray384.png
Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the deep cervical fascia (semispinalis capitis visible at bottom right).
Semispinalis.png
Deep muscles of the back. Semispinalis muscles labeled. Semispinalis capitis is the upper of the labeled ones.
Details
Latin Musculus semispinalis capitis
Transverse processes of lower cervical and higher thoracic columna
Area between superior and inferior nuchal line
Greater occipital nerve
Actions Extends the head
Identifiers
Gray's p.400
Dorlands
/Elsevier
m_22/12550702
TA A04.3.02.209
FMA FMA:22830
Anatomical terms of muscle

The semispinalis capitis (complexus) is situated at the upper and back part of the neck, deep to the splenius, and medial to the longissimus cervicis and capitis. It is part of the transversospinales muscle group.

It arises by a series of tendons from the tips of the transverse processes of the upper six or seven thoracic and the seventh cervical vertebrae, and from the articular processes of the three cervical vertebrae above this (C4-C6).

The tendons, uniting, form a broad muscle, which passes upward, and is inserted between the superior and inferior nuchal lines of the occipital bone.

It lies deep to the trapezius muscle and can be palpated as firm round muscle mass just lateral to the cervical spinous processes.

The semispinalis muscles are innervated by the dorsal rami of the cervical spinal nerves.

Additional images[edit]

References[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.

External links[edit]