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one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone
Origin: Iliac Crest. Insertion: Linea Alba and Bottom of Costals. Action: Flexion and Rotation to Same Side.
a flat muscle with transverse fibers that forms the anterior and lateral walls of the abdominal cavity
either of two flat triangular muscles of the shoulder and upper back that are involved in moving the shoulders and arms
Extends, adducts, and medially rotates the arm; draws the shoulder downward and backward
Major muscle group of the vertebral column. Consists of Iliocostalis, Longissimus, and Spinalis muscles. Laterally flex spine & extend vertebral column.
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