Biology

Difference between artery and vein

Main difference

There are several types of blood vessels that make up the transport system of a living organism. Veins, arteries, capillaries are the blood vessels through which the transport of blood takes place, and the exchange of other materials also occurs through this. These blood vessels are designed to transport specific blood within the body, that is, they can be differentiated mainly based on the blood they carry, either oxygenated or deoxygenated blood. The blood flow of arteries and veins revolves around the heart; They can be differentiated mainly since the arteries are the blood vessels of the blood circulatory system that carry oxygenated blood from the heart to the different parts of the body.

Comparative chart

Artery Come to
Function It carries oxygenated blood from the heart to different parts of the body. It carries deoxygenated blood from different parts of the body to the heart.
Types Pulmonary arteries and systemic arteries. Superficial veins, deep veins, systematic veins, and pulmonary veins.
Thickness More Less
Present Deep in the skin. Closer to the skin.

What is the artery?

The arteries are the thick and elastic blood capillaries that are responsible for the transport of oxygenated blood from the heart to the various parts of the body. The arteries are mainly of two types, pulmonary arteries and systemic arteries. The systemic arteries carry oxygenated blood as it carries blood from the heart to the periphery, while the pulmonary arteries are the arteries that carry deoxygenated blood as it travels to the lungs for purification. The wall of the artery is made up of three layers. That is why it is thicker than veins. With the added thickness and elasticity in the walls, the arteries are designed in such a way that they can handle high pressure blood flow. The arteries, which generally carry oxygenated blood from the heart, awaiting the pulmonary artery, it further divides into smaller, thinner vessels called arterioles. Tunica Interna, tunica media and tunica externia are the three layers that make up the wall of the arteries. Of all of them, tunica media is the thickest layer.

What is Vein?

Veins are the blood capillaries responsible for transporting deoxygenated blood from various parts of the body to the heart. Deoxygenated blood from the periphery is brought to the heart for purification. Mainly there are four types of veins; superficial veins, deep veins, systematic veins, and pulmonary veins. All three types of arteries carry deoxygenated blood, except for the pulmonary vein, which carries oxygenated blood. Veins have thin walls compared to arteries and are located closer to the skin. Its semilunar valves in the veins prevent blood from flowing in the opposite direction. With the naked eye, we cannot locate the arteries of the body as they are located deeper in the skin, although we can locate the veins, which are present closer to the skin.

Artery versus vein

  • Arteries are the blood vessels in the blood circulatory system that carry oxygenated blood from the heart to the various parts of the body, on the other hand, veins are the blood vessels in the blood circulatory system that carry deoxygenated blood from the various parts of the body . body to heart.
  • Arteries have thicker walls than veins.
  • With the naked eye, we cannot locate the arteries of the body as they are located deeper in the skin, although we can locate the veins, which are present closer to the skin.
  • The vein is a capacitance vessel, while the artery is a resistance vessel.

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