Structural difference between arteries and veins

In this article we discus about the Structural difference between arteries and veins. Arteries and veins are two different types of blood vessels in the circulatory system and are primarily involved in the circulation of blood throughout the body. However, the two blood vessels are quite different from each other in terms of function.

One of the main differences between arteries and veins is that arteries carry oxygenated blood to all parts of the body, while veins carry deoxygenated blood to the heart.

Differences between arteries and veins

The following are the main differences between arteries and veins:

Arteries Structural difference between arteries and veins

  • Functions : transport of pure, oxygenated and nutrient-rich blood
  • Wall : It consists of three different layers, which are rigid, thicker and very muscular.
  • Location : Located deep within the body.
  • Color : Red.
  • Transportation : They carry blood from the heart to various parts of the body.
  • Pressure rate : High pressure, as the blood flows due to the pumping pressure of the heart.
  • Oxygen level: Comparatively higher oxygen level.
  • Carbon dioxide levelCarbon dioxide level is low.
  • Direction of blood flow : Downward from the heart to body tissues.
  • Luminas : The lumina is narrow.
  • Valves : Valves are absent
  • Disorders : The arteries have a higher risk of suffering from certain diseases such as angina pectoris, atherosclerosis, etc.

Veins    Structural difference between arteries and veins

  • Functions : transport of impure and deoxygenated blood
  • Wall : It consists of three different layers, which are thin and foldable.
  • Location : Peripherally located closer to the skin.
  • Color : Blue.
  • Transport : They carry blood to the heart from different parts of the body.
  • Pressure rate : Low pressure, as blood flows through the capillary action of the veins.
  • Oxygen level: Comparatively low oxygen level.
  • Carbon dioxide levelCarbon dioxide level is high.
  • Direction of blood flow : Upward from the body tissues to the heart.
  • Luminas : The lumina is wide.
  • Valves : Valves are present.
  • Disorders : Veins are less susceptible to diseases such as varicose veins.

Arteries vs Veins

Arteries are the blood vessels that carry blood from the heart, where it branches into even smaller vessels. Finally, the smaller arteries, called arterioles, branch further into tiny capillaries, where the exchange of all nutrients and other waste molecules takes place.

Veins are the blood vessels present throughout the body. They are translucent tube-shaped structures that work by transporting deoxygenated blood from the tissues to the heart for reoxygenation. Compared to arteries, veins have thin walls.

Types of arteries and veins

The different types of arteries and veins are shown below.

Types of arteries

There are three different types of arteries:

  • Elastic arteries: Also known as conductive arteries, they have a thick middle layer that stretches in response to each heart pulse.
  • Muscular arteries: These  are medium-sized arteries that draw blood from the elastic arteries.
  • Arterioles:  direct the blood towards the capillaries. These are arterial divisions that carry blood from the heart.

Types of veins

The different types of veins include:

  • Deep veins: they  are located deep within the muscle tissue .
  • Superficial veins: they  are closer to the surface of the skin.
  • Pulmonary veins:  carry oxygenated blood to the heart from the lungs.
  • Systemic veins: they  are present throughout the body and carry deoxygenated blood to the heart for purification.

Frequently asked questions about the difference between arteries and veins

What is the main difference between arteries and veins?

The arteries are responsible for carrying oxygenated blood from the heart to different organs. On the contrary, the veins carry deoxygenated blood from different organs of the body to the heart for oxygenation.

What are the different types of veins in the human body?

Pulmonary veins, systemic veins, superficial veins, and deep veins are the four different types of veins found in the human body.

Why is arterial blood loss more serious than vein blood loss?

The arterial pressure of the arteries is much higher than that of the veins. When an artery is cut, blood spurts out with very high pressure and can be rapid. In contrast, when a vein is cut, blood flows out of it very slowly and has more time to clot. Therefore, it is less serious than arterial blood loss.

Where are the superficial and deep veins found in the human body?

Superficial veins have very little muscle support and are close to the surface of the skin. The deep veins are located near the leg bones in the center of the legs and are surrounded by muscles.

Name the largest vein in the human body.

The inferior vena cava is the largest vein in the human body that carries blood from the lower half of the body to the heart.

Name the blood vessels that carry blood from the heart.

Arteries are the blood vessels that carry oxygen-rich blood from the heart to all other cells, tissues, and organs in the body.

Name the largest artery in the human body.

The aorta is the largest artery in the human body. It carries blood from the heart to different parts of the body.

What are the different layers of arteries and veins?

The three different layers of arteries and veins are:

  • The innermost layer or intimate tunic.
  • The middle layer or tunica media.
  • The outermost layer or tunic adventitia.

What food is responsible for cleaning the artery?

Olive oil, watermelon, avocado, fish, asparagus, walnuts, broccoli, turmeric, etc., are the important foods for cleaning the artery.

How are arteries and veins connected?

The branches of the arteries and veins are connected by very small blood vessels called capillaries.

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