Axilla and arm

Question 1

Boundaries of axilla

Answer 1

Apex: cervico-axillary canal Base: axillary fossa (armpit) Anterior: Pectoral muscles Posterior: formed by the subscapularis, latissimus dorsi, and teres major muscles Medial: formed by the ribs, intercostal muscles and serratus anterior Lateral: formed by the intertubercular (bicipital) groove of the humerus

Question 2

Branches of first segment of axillary artery

Answer 2

Superior thoracic artery (supplies muscles of first and second intercostal spaces)

Question 3

Second segment axillary artery branches

Answer 3

Thoracoacromial artery and lateral thoracic artery

Question 4

Third segment axillary artery branches

Answer 4

Subscapular artery (branches into thoracodorsal and circumflex scapular artery), posterior humeral circumflex, and anterior humeral circumflex

Question 5

Answer 5

Axillary vein, made up of brachial (orange) and basilic veins

Question 6

Answer 6

Humeral (lateral) nodes lie along the lateral wall of the axilla, medial and posterior to the axillary vein

Question 7

Answer 7

Question 8

Answer 8

Question 9

Answer 9

Question 10

Answer 10

Question 11

Answer 11

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

Answer 16

Question 17

Posterior compartment

Answer 17

Deep brachial artery and radial nerve

Question 18

Answer 18

Question 19

Answer 19