Blood Supply of Arm
The blood supply to the arm mainly comes from the brachial artery, a major artery of the upper limb. Blood supply to the arm
Brachial Artery
The brachial artery arises from the axillary artery in the armpit and descends along the medial aspect of the arm. It provides oxygenated blood to the muscles and tissues of the arm and terminates into the radial and ulnar arteries at the elbow.
Branches of the Brachial Artery
- Deep Brachial Artery: Supplies blood to the muscles of the posterior compartment of the arm.
- Superior and Inferior Ulnar Collateral Arteries: Provide collateral circulation around the elbow joint.
- Nutrient Artery: Supplies the bone of the humerus.
- Anastomoses: The brachial artery forms an anastomosis with branches of the radial and ulnar arteries at various points. This network ensures adequate blood supply to the arm even if one of the arteries becomes obstructed.
Venous Drainage
- Veins accompany the arteries and carry deoxygenated blood back to the heart.
- The major veins of the arm include the basilic, cephalic, and brachial veins, which merge to form the axillary vein.
Bones and Muscles in the Arm
The arm body part is the upper limb of vertebrates. Anatomy of the arm involves the detailed study of its bones, muscles, nerves, blood vessels, and connective tissues. Learning about the arm muscles and arm bones helps in understanding how movements are coordinated and how injuries can be prevented or treated.
In this article, we will cover the anatomy of the arm and read about the nerve supply and blood supply in the arm along with arm muscles and bones, in detail.
Table of Content
- Arm Body Part – Anatomy of the Arm
- Arm Muscles Anatomy
- Biceps Brachii
- Brachialis
- Coracobrachialis
- Triceps Brachii
- Arm Bones
- Forelimbs and Hindlimbs
- Parts of the Arm
- Bones in the Arm
- Humerus
- Radius and Ulna
- Anatomy of Hand
- Blood Supply of Arm
- Nerve Supply of Arm
- Functions of the Arm
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