• pectoralis major muscle
• deltoid muscle
• pectoralis minor muscle
• tendon of latissimus dorsi muscle with thoracodorsal nerve and artery cleaned.

Nerves

• lateral pectoral nerve
• medial pectoral nerve
• intercostobrachial nerves
• branches of the brachial plexus will be studied in detail soon.

Arteries

• thoracoacromial trunk and pectoral branches (you may also find the deltoid branch, acromial branch, clavicular branch)
• axillary artery and vein

Other

• cephalic vein
• deltopectoral triangle

On the skeleton, find:

• clavicle
• jugular (suprasternal) notch
• acromion
• coracoid process
• greater and lesser tubercles of humerus