Bassett Collection of Stereoscopic Images of Human Anatomy

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Pectoral region and axilla

Left axilla (continued); general view of neck, shoulder and axilla, clavicle intact

Image #90-6

KEYWORDS: Axilla, Pectoral region, Peripheral nervous system, Shoulder.

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Pectoral region and axilla

Left axilla (continued); general view of neck, shoulder and axilla, clavicle intact

The left sternocleidomastoid and trapezius muscles have been removed and the deep structures of the neck dissected. The deltoid, pectoralis major, pectoralis minor and subclavius muscles have also been cut away and the axilla freed of connective tissue and lymphatic structures. The arm has been rotated slightly medially.

1 .	Thyroid gland
2 .	Sternocleidomastoid muscle
3 .	Costoclavicular ligament
4 .	Sternoclavicular joint (opened)
5 .	Pectoralis major muscle
6 .	Manubrium of sternum
7 .	External intercostal muscle
8 .	Rib II
9 .	Internal intercostal muscle
10 .	Internal jugular vein
11 .	Superficial cervical artery
12 .	Supraclavicular part of brachial plexus
13 .	Clavicle
14 .	Coracoclavicular ligament
15 .	Acromioclavicular joint capsule
16 .	Acromion
17 .	Joint capsule of humerus
18 .	Coracoacromial ligament
19 .	Coracoid process of scapula
20 .	Humerus
21 .	Infraclavicular part of brachial plexus
22 .	Axillary artery
23 .	Biceps brachii muscle (long head)
24 .	Biceps brachii muscle (short head)
25 .	Coracobrachialis muscle
26 .	Supreme thoracic artery
27 .	Serratus anterior muscle
28 .	Origin of pectoralis minor muscle