Question

The largest artery is
A. Vena cava
B. Pulmonary artery
C. Aorta
D. Pulmonary vein

Answer 1

Hint: The blood vessels are responsible for the transportation of the blood from one part of the body to another. They are tubular structures which helps in the circulation of the body fluids like blood.

Complete answer:
The correct answer is (C) Aorta.
The blood vessels in the human are mainly of two types- Arteries and Veins. Arteries are the blood vessels which carry the oxygenated blood from the heart to all the other parts of the body whereas veins are responsible for carrying the deoxygenated blood from all the body to the heart which further goes into the lungs for purification. Exceptions are pulmonary artery and pulmonary vein. Being artery, pulmonary artery functions to carry deoxygenated blood from heart to the lungs and pulmonary veins functions to carry oxygenated blood from the lungs to the heart after its purification.
The largest blood vessel present in the human body is Aorta, which is also the largest artery of the body. It carries the oxygenated blood from the heart to various organs of the body. It has thick walls and is elastic in nature. The blood flows under high pressure in the aorta. It branches further into a network of small arteries which further divides into arterioles and capillaries and extends all throughout the body. No valves are present in the aorta as this is the artery and thus blood flows at high pressure.

Note: Aorta is a type of artery extending from heart to all the body parts as it divides further into arteries and then capillaries to reach all the tissues of the body because it is responsible for carrying oxygenated blood.