Question

What is the name of the major artery in your arm?

Answer 1

Hint: Our arm contains various arteries. They supply blood to the whole body from the heart directly or indirectly. The major artery of the arm travels through the shoulder and underarm mainly.

Complete answer:
The blood vessels that transport oxygen-rich blood from the heart to the body's tissues are known as arteries. An artery is a muscular tube with three layers of smooth tissue lining it:
- The intima is the internal layer of the artery, which is surfaced with a smooth tissue called the endothelium.
- The media is a sheet of muscle that enables arteries to withstand the heart's elevated pressures.
- The adventitia, or connective tissue anchoring arteries, is a connective tissue anchoring system.

The upper limb's arterial flow is provided by five major arteries (from proximal to distal):
i) Subclavian artery
ii) Axillary artery
iii) Brachial artery
iv) Radial artery
v) Ulnar artery

The axillary artery continues past the lower boundary of the teres major to form the brachial artery. That is the arm's predominant blood source. The brachial artery is the primary blood supply for the arm and hand, and it is a vital part of the circulatory system. It ties the shoulder's lower margin to the elbow's lower margin of the Teres major tendon. Since this artery is wide, severing it will induce loss of consciousness in as little as 15 seconds and disability in less than 90 seconds.

Hence, the Brachial artery is the most important and therefore major artery of the arm.

Note: The brachial artery has two branches at the terminal end. The brachial artery’s pulse is usually used to determine the blood pressure of patients by the doctors.