Posterior w all of axilla is formed by –
Correct Answer: Subscapularis
Description: Ans. is 'c' i.e., Subscapularis Axilla (armpit)o The axilla is a pyramidal space situated between the upper part of the arm and the chest wall. It resembles a four sided pyramid, and has following : (i) an apex (ii) a base (iii) four walls (anterior, posterior, medial and lateral).Anterior (pectoral) wall Formed by (i) Pectoralis major; (ii) Pectoralis minor, and (iii) Subclavius. The . latter two muscles enclosed by clavipectoral fascia.Posterior (subscapular) wallFormed by (i) Subcapularis. (ii) Teres major, and (iii) Latissimus dorsi.Medial (thoracic) wallFormed by (i) Upper four ribs (with their intercostal muscles), and (ii) Upper part of serratus anterior.Lateral (humeral) wallFormed by (i) Upper part of humerus with bicipital groove lodging the tendon of long head of biceps, and (ii) Corachobrachialis and short head of biceps -Base Formed by Skin, superficial fascia and deep (axillary) fascia. It is directed downwards.Apex It is directed upwards and medially towards the root of neck. It communicates with supraclavicular triangle of neck, hence referred to as Cervicoaxillary canal. It is triangular in shape and is bounded anteriorly by clavicle, posteriorly by upper part of scapula and medially by outer border of first rib. The axillary artery and brachial plaxus enter the axilla through this canal.
Category:
Anatomy
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now