HK 3401 Quiz: Dissection 3_Axilla and Brach...pdf

• School: University of Guelph
• Department: Human Kinetics
• Course: HK 3401
• Professor: Lorraine Jadeski

Document Summary

Objective: identify and dissect muscles of pectoral region. Clean anterior surface of pectoralis major; define its borders. Trace tendon of pectoralis major to its distal attachment on the humerus. The deltopectoral triangle is located superior to the clavicular head of pectoralis major, and inferior to the adjacent deltoid muscle. Identify the cephalic vein, which is contained within the deltopectoral triangle. Reflect clavicular head of pectoralis major: carefully detach clavicular head of pectoralis major from clavicle: reflect the muscle laterally. Lateral pectoral nerve entering posterior surface of clavicular head of pectoralis major. Reflect sternal head of pectoralis major: carefully detach sternal head of pectoralis major from sternum: reflect the muscle laterally. Medial pectoral nerve; this nerve pierces pectoralis minor before entering sternal head of pectoralis major. Clavipectoral fascia: once pectoralis major is reflected, clavipectoral fascia is exposed. This fascia encloses pectoralis minor and subclavius muscles. Identify these two muscles, observe their proximal and distal attachments.