Courses for Kids
Free study material
Offline Centres
Store Icon


share icon
share icon

The main function of the arteries is to circulate or to hold oxygenated blood from the guts to different parts of the physical body. The walls of the arteries are thick because they need to face up to the high released from the guts during the method of pumping the blood. Therefore, the thick walls of the arteries help in maintaining the vital sign simultaneously by controlling blood flow.

The Blood Vessels

Blood is one of the foremost important and fluid connective tissues. Both blood cells and blood vessels play an important role within the cardiovascular system. Most animals, insects, birds and humans possess a cardiovascular system, which consists of the guts, blood cells and blood vessels.

What are Arteries?

Arteries are blood vessels, the network of pathways through which the oxygenated blood travels faraway from the guts to varied cells, tissues and organs of the physical body.

There are Three different types of Arteries:

  • Elastic arteries

  • Muscular arteries

  • Arterioles

Elastic Arteries: 

Also referred to as conducting arteries, these comprise a thick middle layer stretching in response to every heart pulse. It's the power to stretch because it has numerous collagen and elastin filaments.

Muscular Arteries: 

Also referred to as distributing artery, these medium-sized arteries draw blood from an elastic artery to branch into smaller arteries and arterioles referred to as resistance vessels. These comprise numerous smooth muscles that allow easy expanding and contracting counting on blood demand.


Small-diameter blood vessels that reach from an artery and lead towards capillaries are called arterioles. Oxygen and nutrients pass into tissues from the blood through the skinny capillary walls.

Compared to other blood vessels, arteries have thick walls and are located superficially. this is often mainly because these blood vessels perform the critical function of carrying oxygenated blood throughout the body under considerable pressure. just in case these blood vessels have thinner walls, they might get damaged, which ends up in blood loss caused by the rupture of blood vessels.

Difference between Arteries and Veins

Arteries and Veins

Two main sorts of blood vessels functioning within the cardiovascular system of our bodies are arteries and veins. Both arteries and veins coordinate with each other for transporting blood throughout the body, aiding to oxygenate and to deoxygenate every cell with every heartbeat. Arteries carry oxygenated blood from the guts to varied body parts and body tissues whereas veins carry deoxygenated blood from various parts of the body and tissues to the guts to re-oxygenate. Their functions are related to removing wastes from each body cell.

What are Veins?

Blood vessels that carry deoxygenated blood from body parts or tissues back to the guts are called veins. Like arteries, these are a crucial part of our cardiovascular system but have thinner walls than arteries. The most important vein within the physical body is the superior and inferior vein that directly drains into the proper atrium of the guts.

There are Three different Types of Veins, Namely-

  • Deep Veins: 

it's located deep within the body. it's different from superficial veins that are located on the brink of the body’s surface. If a grume within the deep veins inside our body, the condition is named Deep Vein Thrombosis (DVT). It normally occurs within the lower leg, pelvis or thigh area.

  • Superficial Veins: 

The veins that are easily visible in places like arms and cow’s udder are superficial veins as these are located closer to the surface of the skin. Superficial venous disease is that the risk factor related to these veins.

  • Pulmonary Veins: 

Veins that are located throughout the body to hold or transport deoxygenated blood to the guts for reoxygenation are called pulmonary veins. the most important pulmonary veins include the four main pulmonary veins, two originate from each lung that drains into the left heart atrium.

Arteries and Veins Difference




Blood Type

Arteries carry pure and oxygenated blood which is rich in nutrients, except the arteria pulmonalis.

Veins carry impure, deoxygenated blood apart from the vena pulmonalis.


Arteries have rigid, highly muscular, and thicker walls.

Veins have thin and collapsible walls.

Body Location

Arteries are located deep within the body.

It is assumed that veins are located closer to the skin


Arteries are red-coloured vessels.

Veins are blue coloured vessels.

Blood flow direction

These carry blood from the guts to varied body parts and tissues.

Veins carry blood from the varied parts of the body and tissues to the guts. 


Blood flows through arteries under high pressure.

Blood flows through veins with very low pressure.


No valves are present.

Valves are present here to stop the backward blood flow.

Level of Oxygen

Arterial blood has higher oxygen levels.

Veins have a lower oxygen level.

Carbon Dioxide Level

Arterial blood has low CO2.

Venous blood features a high level of CO2.


It has a narrowed lumen

It has a wide lumen.


Absence of valves in these vessels.

Valves are present within the veins that allow blood flowing in an upward direction.


Certain artery related diseases like atherosclerosis, renal vascular disease, and pectoris exist.

Very few veins related diseases are known as varicose veins

Want to read offline? download full PDF here
Download full PDF
Is this page helpful?

FAQs on Arteries

Q1. What are the different Layers of the Vein and Artery? 

Ans - There are three different Layers of Arteries and Veins, namely-

  • Tunica intima (the innermost layer)

  • Tunica media (the middle layer)

  • Tunica adventitia (the outermost layer)

Q2. Which is the largest artery in the Human Body and what is its Role?

Ans - The largest artery in the human body is Aorta where the left ventricle pumps blood to distribute blood to the whole body. It breaks into arteries and then to fine structures called arterioles. Its huge importance lies in the fact that it directly connects to the heart and is the initial point for blood transportation to the entire body system.