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Anterior cog muscle
Medical expert of the article
Last reviewed: 23.04.2024
The anterior serrate muscle (m. Serratus anterior) is broad, quadrangular in shape, is attached to the thorax from the side, forms the medial wall of the axillary cavity. It begins with large teeth on the upper eight or nine ribs and is attached to the medial margin and the lower corner of the scapula. The upper and middle muscle bundles lie horizontally, the lower fascicles are obliquely located and run from front to back and from below upwards. In the intervals between the lower teeth of the anterior dentate muscle, the teeth of the external oblique abdominal muscle come.
[Function of anterior cog muscle
Pulls the scapula, especially the lower corner, forward and laterally. Lower tufts of the muscle promote the rotation of the scapula around the sagittal axis, as a result of which the lateral angle of the scapula moves upward and medially - the arm rises above the horizontal. With a strengthened scapula, the anterior dentate muscle raises the ribs, contributing to the expansion of the thorax.
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