Muscle complexus - Musculus complexus

Description

The complexus muscle is the ventrolateral division of semispinalis capitis that arises from cervical vertebral articular processes and inserts lateral to the biventercervicis on occipital bone.

Origin: Caudal articular processes of the first thoracic to the third cervical vertebrae.

Insertion: Dorsal nuchal line.

Action: Raises the head and neck, in unilateral action to flex the head and neck laterally.

Nerve: Dorsal branches of the cervicales.


Text by Antoine Micheau, MD - Copyright IMAIOS

Images

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