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Chapter-05 Axilla

BOOK TITLE: Kadasne’s Textbook of Anatomy (Clinically Oriented): Volume 1: Upper and Lower Extremities

Author
1. Kadasne DK
ISBN
9788184484557
DOI
10.5005/jp/books/10433_5
Edition
1/e
Publishing Year
2009
Pages
17
Author Affiliations
1. Pandit Jawaharlal Nehru Medical College, DMIMS (a Deemed University), Sawangi, Wardha, Maharashtra, India, Pandit Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (A Deemed University), Sawangi, Wardha, Maharashtra, India
Chapter keywords

Abstract

Apex of the axilla communicates with the neck through the cervico-axillary canal. Anterior wall of the axilla is formed by pectoralis major, pectoralis minor and the subclavious muscles and the posterior wall is formed by three muscles namely the subscapularis, teres major with the latissimus dorsi muscles. Medial wall of the axilla is larger and broader while the lateral wall is narrower. Seratus anterior muscle forms the medial wall of the axilla. It takes origin from upper eight ribs and gets inserted into the ventral aspect of medial border of the scapula from the superior to inferior angle of scapula. It is supplied nerve serratus anterior (Nerve of Bell). Injury of the nerve to serratus anterior results in winged scapula. Axillary artery is a continuation of the subclavian artery at the outer border of the first rib. It ends at the lower border of the teres major muscle and continues further as the brachial artery. Pectoralis minor muscles divides axillary artery into three parts, i.e. above, behind and below the muscle. Axillary vein begins at the lower border of the teres major muscle as the continuation of the basalic vein. It ends at the outer border of the first rib beyond which it is continued as the subclavian vein. Brachial plexus is formed by anterior primary rami of Cervical 5, 6, 7, and T1.

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