gross anatomy: deltoid n rotator cuff muscles,front of arm, cubital fossa,back of arm , anastomosis around elbow joint,front of forearm.

It seems like you're asking for a breakdown of the gross anatomy of various parts of the arm. Here's a brief overview:

1. Deltoid and Rotator Cuff Muscles: The deltoid muscle is a large, triangular muscle that covers the shoulder joint. It's responsible for arm rotation and allows the arm to move away from the body. The rotator cuff is a group of four muscles (supraspinatus, infraspinatus, teres minor, and subscapularis) that stabilize the shoulder joint.

2. Front of Arm: This area is primarily made up of the biceps brachii muscle, which is responsible for arm flexion and forearm rotation. The brachialis and coracobrachialis muscles are also located here.

3. Cubital Fossa: This is a triangular area located on the anterior side of the elbow joint. It contains several important structures including the brachial artery, median nerve, and tendon of the biceps brachii muscle.

4. Back of Arm: This area is primarily made up of the triceps brachii muscle, which is responsible for arm extension.

5. Anastomosis Around Elbow Joint: Anastomosis refers to a connection made between blood vessels. Around the elbow joint, there are several arterial anastomoses that provide blood supply to the joint and the muscles of the forearm.

6. Front of Forearm: This area contains several muscles that are responsible for various movements of the wrist, hand, and fingers. These muscles are grouped into two layers: superficial and deep. The superficial layer includes the flexor carpi radialis, palmaris longus, flexor carpi ulnaris, and flexor digitorum superficialis. The deep layer includes the flexor pollicis longus and flexor digitorum profundus.