Pectoralis Minor Muscle - Attachment, Action & Innervation
Serratus Anterior Muscle
The serratus anterior muscle is a sheet of muscle that runs along the sides and front of the rib cage.
Attachments of Serratus Anterior Muscle: Origin & Insertion
Origin: (proximal attachments):
Anterior surfaces of the first 8 or 9 ribs.
Insertion: (distal attachments):
Anterior surface of medial border of scapula.
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Actions on the Shoulder:
Nerve to Muscle and its Spinal Segment:
Long thoracic nerve (C5-C7).
Muscles That Act On The Posterior Shoulder
Muscles That Act On The Anterior Shoulder