latissimus dorsi

Latissimus dorsi

SHORT DESCRIPTION

• Dorsi, flat and thin.
• Covers the back and bottom of the trunk.
• It helps to form the back wall of the axillary region.

OCUPA

• It extends from the thoracic, lumbar and sacral regions of the spine, to the intertubercular groove of the humerus.

ORIGIN

• Prickly and the supraspinal ligaments in the last 6 thoracic vertebrae and five lumbar vertebrae process.
• median sacral crest.
• posterior third of the iliac crest.
• external face of the last 4 ribs.
• On its way it can give an accessory fasciculus, which goes to the inferior angle of the scapula.

INSERTION

• Intertubercular bottom groove.

INNERVATION :  For the Fifth Cervical.

FUNCTION

• Then pulls the arm, and gives a medial rotation movement.
• Abduction.
• Extension.
• fixed in the humeral point, raises the trunk.
• If you have 2 fixed ends: position contributes to the firm.

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