The brachial artery originates from which artery?

• A. Axillary artery
• B. Subclavian artery
• C. Aorta
• D. Common carotid artery

Answer: (A)

The brachial artery originates from the axillary artery. As the axillary artery passes the lower border of the teres major, it becomes the brachial artery, which then travels down the arm and typically divides into the radial and ulnar arteries at the elbow. The axillary artery itself is the continuation of the subclavian artery, while the aorta and the common carotid arteries supply other regions and do not give rise to the brachial directly. This direct origin from the axillary artery is what defines the path of the major artery supplying the upper limb.