Hidden wings of Humans-Serratus Anterior

Serratus Anterior- Hidden wings of Humans? weird title? well, I see these muscles as wings haha😆. The serratus anterior is a muscle that originates on the surface of the 1st to 8th ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula. 


Hidden wings of Humans-Serratus Anterior
Hidden wings of Humans-Serratus Anterior

Origin of Serratus anterior

Serratus anterior normally originates by nine or ten muscle branches from either the first to ninth ribs or the first to eighth ribs.

Insertion of Serratus anterior 

The muscle is inserted along the medial border of the scapula between the superior and inferior angles with thoracic vertebrae.

Nerve supply of Serratus anterior

The serratus anterior is innervated by the long thoracic nerve also known as the Nerve of the Bell, which is a branch of the brachial plexus.

ACTION of Serratus anterior

all the fibers work together to bring movement around the shoulder joint. serratus anterior acts as an antagonist to the rhomboids muscles. 
The serratus anterior is so many times is known as the "big swing muscle" or "boxer's muscle" because its most muscle fibers actives largely responsible for the protraction of the scapula. The serratus anterior also plays a role in the upward rotation of the scapula.

Blood Supply of Serratus anterior

The Serratus anterior is supplied by lateral thoracic artery, superior thoracic artery (upper part), thoracodorsal artery (lower part).


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