Bassett Collection of Stereoscopic Images of Human Anatomy

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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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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

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