Cat, left thoracic limb, lateral view with muscle removed from the scapular region. Along the spine of the scapular, notice the large acromion (asterisk) in the cat. The teres minor m. (1) is present.
In the brachium identify: long head of the triceps brachii m. (2); lateral head of the triceps brachii m. (3); and the brachialis m. (4). The latter muscle originates from the caudal surface of the humerus and winds laterally to the cranial surface.