ANAT 315 Chapter Notes - Chapter 3: Occipital Bone, Splenius Muscles, Intervertebral Foramina
7 Oct 2016
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Document Summary
Anat 315 intrinsic muscles of the spine. Superficial group = erector spinae muscles: parallel sets of muscles, spinalis (most medial, longissimus. Iliocostalis (most lateral) originates from ribs and ilium. Deep group = transverso-spinalis: small slips of muscles, lie deep to the spinalis. Running up the back from posterior surface of the sacrum, the ilium, the iliac crest and associated ligaments. Extend along the entire vertebral column to aid in. Attach to transverse processes 3 or 4 levels below. Extend along the entire vertebral column to aid in posture + aid in. Aorta which give off small branches that run dorsally to supply back muscles. Runs up to insert on the occipital bone. Extend the head when working on one side only. Turn the head to the same side as the muscle. Dorsal rami of the spinal nerves (exit from intervertebral foramina at each spinal level) Multiple pairs of arteries that origin from the thoracic.
