Let's Learn the Difference Between Arteries and Veins Here

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Let's Learn the Difference Between Arteries and Veins Here
Let's Learn the Difference Between Arteries and Veins Here

Blood vessels are divided into three types, namely arteries, veins, and capillaries. The difference between arteries and veins can be seen when we look at it from the side of the cardiovascular system

The cardiovascular system is responsible for supplying nutrients and oxygen to all body tissues. In addition, this system consisting of the heart and blood vessels also plays a role in bringing the remains of the metabolic processes to the excretory organs in the kidneys and lungs.

Come on, learn the difference between arteries and veins here - Alodokter

Broadly speaking, the difference between arteries and veins in the cardiovascular system can be seen in the direction of blood flow they carry. Arteries are in charge of carrying blood from the heart to the rest of the body. On the other hand, veins are in charge of carrying blood from the body's organs back to the heart.

Difference between Artery and Vein

In order to get to know the difference between arteries and veins, it is better to know the following descriptions first.

Flowing blood

The body needs oxygen contained in the blood to survive. The oxygenated blood is pumped from the heart to all body tissues along the arteries.

While the task of the veins is to bring blood back to the heart. Blood flowing in veins has a lower oxygen content and contains respiratory carbon dioxide residue.

The thickness of the walls of blood vessels

One of the significant differences between arteries and veins is the thickness of their walls. Arteries have a thick layer of muscle in their walls, which can either contract to reduce the size of the arteries, or relax to become wider according to the body's needs.

While the walls of the veins are thinner, because the muscle layer is thinner.


Arteries divide into many branches like trees. The largest branch of the artery is called the aorta.

The Aorta then forks several times into smaller branches. The farther away from the heart, the smaller the arteries.

Meanwhile, the vein branches get bigger as they approach the heart.


The striking difference between arteries and veins is that veins have one-way valves. This valve prevents blood from flowing back in the wrong direction. Meanwhile, arteries don't need valves because pressure from the heart makes blood flow in one direction.

All arteries carry oxygen-rich blood throughout the body, except for the pulmonary arteries, which carry oxygen-free blood to the lungs.

On the other hand, all veins carry carbon dioxide-rich blood from the body to the heart, except for the pulmonary veins which carry oxygen-rich blood from the lungs to the heart.

Disorders Affecting Arteries and Veins

The other notable difference between arteries and veins is a potential nuisance to both. The following are some disorders that can attack arteries and veins:

Arterial disorders

In arteries, the potential danger that threatens is blockage. Blockages in the arteries can be caused by a fatty substance called plaque or atheroma. Disorders of this artery is called atherosclerosis.

Due to plaque buildup, the arteries will harden and narrow. This will disrupt the blood flow and oxygen supply to the body's vital organs.

Another risk that arises is blood clots that have the potential to cause obstruction of blood flow to tissues and organs of the body, such as the brain or heart.

Atherosclerosis tends to occur without any initial symptoms so many are not aware that they are suffering from this disease. This disease has the potential to cause he alth problems that can be life-threatening.

If left untreated, this arterial disorder can lead to strokes and heart attacks. Disorders of the arteries can also cause peripheral artery disease.

venous disorders

Common disorders of the veins are varicose veins, which are enlarged veins. All veins are at risk for varicose veins, but the most common are veins in the legs.

This occurs due to excessive pressure on the lower blood vessels of the body from standing or walking upright for too long.

In addition to varicose veins, diseases of the veins that need to be watched out for are deep vein thrombosis (DVT). This condition occurs when a blood clot blocks a vein in the leg.

The symptoms include pain in the legs, changes in the color of the legs to redness or bluish, to swelling and a feeling of warmth in the legs.

Sometimes DVT can occur without any symptoms. If not treated immediately, these blood clots can move to other parts of the body, causing serious he alth problems such as pulmonary embolism.

After seeing the differences between arteries and veins in terms of function and the disorders that often attack them, we should be more vigilant in maintaining a he althy cardiovascular system. This is because the cardiovascular system has a very crucial function for human survival.

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