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Bassett Collection of Stereoscopic Images of Human Anatomy

Pectoral region and axilla

Nerve and blood supply of left pectoralis major muscle

Image #89-3

KEYWORDS: Forearm, Neuralnetwork, Pectoral region, Peripheral nervous system, Vasculature.

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Pectoral region and axilla
Nerve and blood supply of left pectoralis major muscle
The pectoralis major (9) has been reflected laterally from its clavicular (2) and sternocostal (3) origins. A narrow band of the pectoral fascia (8) which invested the deep surface of the muscle has been retained.
1 . Sternocleidomastoid muscle
2 . Clavicular part pectoralis major muscle (cut across)
3 . Sternocostal part pectoralis major muscle (cut across)
4 . Upper pointer: Abdominal part pectoralis major muscle (cut across) Lower pointer: Sheath of rectus abdominis muscle
5 . Supraclavicular nerves
6 . Axillary vein
7 . Anterior thoracic nerve (branches of thoracoacromial vessels lie close to nerve)
8 . Remnant of pectoral fascia
9 . Pectoralis major muscle (reflected laterally)
10 . Pectoralis minor muscle
11 . Rib II
12 . Body of sternum
13 . Pectoral fascia (at former position of lateral border of pectoralis major)
14 . Serratus anterior muscle
15 . Lateral cutaneous branch of intercostal nerve VI