Full Title: Teres Muscle (Major and Minor)
Author: LIsa Giknis
Date of Publication: November 8, 2011
Research Paper Text:
The teres muscle is a muscle that is located in the shoulder of the dog and it’s function is to flex teh shoulder as well as to adduct and internally rotate the shoulder when the front limb is in an outstretched position. This shares a common tendon called the lattisimus dorsi which is used for forward propulsion.
The teres major muscle is a thick but somewhat flattened muscle and is located deep within the shoulder of the dog. Teres means long and round which is how the muscle got it’s name.
Together the teres major and teres minor muscle form an axillary space through which several important arteries and veins pass.
The teres major is a medical rotator and adductor of the humerus and the lattisimus dorsi as states above. The teres major also helps stabilize the humeral head in the glenoid cavity.
The teres major originates from the caudal angle and caudal edge of the scapula and inserts into the eminence on the proximal 1/3 of the medial surface of the humerus.
The innervation is the axillary nerve and the teres major and minor get their blood supply from the axillary artery.
The teres major is the most commonly strained muscle of the dog as it acts like their front wheel drive to assist in propulsion, jumping and pulling their front end and plays an important roll in the dog’s activity.