27. Changes occurring in
the middle of arm
1. Humerus : cylindrical part to triangular part
2. Insertion : of coracobrachialis and deltoid
3. Intermuscular septa : well defined attachments
from the middle of arm
4. Position of nutrient foramen of humerus
5. Brachial artery: changes from medial to front of
arm.
6. Median nerve : crosses brachial artery from
lateral to medial
28. Changes ocurring in
the middle of arm
7. Ulnar nerve and superior ulnar collateral A. : pierce
the medial I.M. septum at this level.
8. Radial nerve and profunda brachii A.: enters the
spiral groove at this level.
9. Basilic vein : pierces the deep fascia at this level.
10. Medial cutaneous N. of forearm : pierces deep
fascia and becomes sub-cutaneous.