1. Triangle of auscultation
Latissimus dorsi
Trapezius
Rhomboid
Nearby ribs 6-7
Lumbar triangle
External oblique of abdomen
Iliac crest
Above internal oblique of abdomen
Weakness “lumbar hernia”

3.  . The humeromuscular tunnel  It is formed by three heads of triceps brachii and the sulcus for radial nerve of humerus.  It extends downwards from the medial to the lateral side of the back of middle part of the humerus;  It transmits the radial nerve and the deep brachial vessels.

4. Triangular space
Subscapularis
Teres major
Long head
Circumflex scapular a.
Quadrangular space
Humeral surgical neck axillary nerve and
posterior humeral circumflex a.

7. Extensor carpi radialis longus Extensor digitorum
Extensor digiti inimi
Extensor carpi ulnaris
Deep
Supinator
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Extensor indicis
Anatomical snuff-box:
Tendons of these three muscle
radial a and cephalic v.
scaphoid bone

8. Thank you.