MV Muscles Of The Arm Medical Muscular 3D Cross Section

The muscles of the arm can be categorized into two main regions: the upper arm and the forearm. Here’s a brief overview:

Upper Arm Muscles

1. Biceps Brachii: Located at the front of the upper arm, it has two heads (long and short) and is primarily responsible for elbow flexion and forearm supination.
2. Triceps Brachii: Situated at the back of the upper arm, it has three heads (long, lateral, and medial) and is responsible for elbow extension.
3. Brachialis: Lies underneath the biceps and assists in elbow flexion.
4. Coracobrachialis: A small muscle that helps flex and adduct the arm at the shoulder.

Forearm Muscles

The forearm muscles are divided into two compartments:

• Anterior (Flexor) Compartment: Includes muscles like the flexor carpi radialis, flexor carpi ulnaris, and flexor digitorum superficialis, which primarily flex the wrist and fingers.
• Posterior (Extensor) Compartment: Contains muscles such as the extensor carpi radialis and extensor digitorum, which extend the wrist and fingers.

Additional Muscles

• Brachioradialis: A muscle of the forearm that flexes the elbow and is located on the radial side.
• Pronator Teres: A muscle that helps in pronating the forearm.

These muscles work together to facilitate a wide range of movements in the arm, from lifting and pushing to intricate hand movements.

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