Anatomy of Movement - Latissimus Dorsi (7)

Location and Structure: The Serratus Anterior is located in the neckOn both sides, the upper part of the muscle is located on the deep surface of the Sternocleidomastoid muscle, and the lower part is located on the deep surface of the Scapula. It is a pair of strap-like long muscles.

The serratus anterior is one of the most common locations for neck and shoulder discomfort and tension after the rhomboid muscle.

When carrying weight on the back and shoulders, it is one of the most easily overused muscles. It assists the rhomboid muscle when elevating the scapula and assists the rhomboideus major when protracting the glenoid fossa.

AboveTo the posterior tubercle of the fourth cervical vertebra.BelowTo the upper edge of the scapula and the inner edge of the scapula.

I. The tubercle of the first cervical vertebra is connected to the lowest point of the scapula.

II. The tubercle of the fourth cervical vertebra connects to the highest point of the scapula rotation descent.

III. Elevate the scapula and make the lower angle of the scapula turn inward.

IV. Raise the scapula

When the scapula is fixed, unilateral contraction causes cervical flexion, and bilateral contraction causes the cervical vertebra to extend backwards

VI. Assist the same side rotation of the cervical vertebrae

Nerve supply:C4 branch of the cervical nerve bundle controls the cervical spine nerve