Cat Muscle Anatomy

Origin: Manubrium of the sternum Insertion: Flat tendon into the superficial fascia of the antebrachium above the elbow Action: Draws the forelimb toward the midline

Origin: Cranial half of the sternum and midventral raphe Insertion: Proximal two-thirds of the shaft of the humerus Action: Draws the forelimb toward the midline and turns the manus forward

Origin: From the six sternebrae and sometimes the xiphoid process, resulting in the appearance of several slips that appear to be separate muscles Insertion: Ventral border of the humberus Action: Draws the forelimb toward the midline

Origin: Median raphe in the vicinity of the ziphoid process Insertion: Along the ventral border of the humerus Action: Synergistic with teh pectoralis minor in drawing the forelimb toward the midline

Origin: Neural spines of the fourth or fifth thoracic to teh sixth lumbar vertebrae Insertion: Medial surface of humerus at the proximal end Action: Pulls forelimb dorsocaudally

Origin: Lambdoidal ridge, middorsal raphe over spine of the axis Insertion: Clavicle and raphe between clavotrapezius and clavobranchialis Action: Protracts the humerus

Origin: Clavicle and raphe between clavotrapezius and clavobrachialis Insertion: Medial surface of the ulna distal Action: Flexes the forearm