Difference Between Similar Terms and Objects

Difference Between Artery and Vein

What is an artery and a vein?

Veins and arteries are the two types of blood vessels of a circulatory system of a body.

Difference Between Artery and Vein

Artery

All blood vessels starting from the heart are arteries and they carry blood from heart to various body organs. Arteries are of 2 types; Pulmonary and systematic. The former carries impure (de-oxygenated) blood from the heart to lungs to purify it and the latter forms a network of arteries that transport pure (oxygenated) blood from the heart to other parts of the body. Arterioles are further extensions or branches of the (main) artery that aid in transport of blood to smalls or tiny parts in the body.

 

Difference Between Artery and Vein

Vein

The vessels that transport blood form various body organs to heart are known as veins. The veins are also of 2 types; Pulmonary and systematic. The former transports pure (oxygenated) blood from the lungs to the heart and the latter drains the tissues of the body and supplies impure (de-oxygenated) blood to the heart. Pulmonary and systematic veins can be superficial or seated deep inside the body.

Difference Between Artery and Vein

Figure 1. Structure of an artery and a vein. Red indicates oxygenated blood, blue indicates deoxygenated

Difference between an artery and a vein

  1. Structure

Artery

Arteries are thick and possess 3 layered walls of muscles and elastin. The three layers in an artery are tunica adventitia or tunica externa; the tunica media, and the tunica intima. An artery has no valves except semilunar valves at the base of the aorta and the pulmonary artery. The lumen in the arteries is narrow.

Vein

Veins have thin walls with few elastic fibres. A vein also consists of three layers as an artery. Valves are present in a vein and the lumen is wider.

  1. Location

Artery

Since arteries are vital for the blood flow to the body, they are located deeper in the body, closer to the skin and hence remain protected by the skin tissues.

Vein

Veins are located close to the skin surface and are at a distance from the corresponding artery.

  1. Pathways

Artery

Fair, clear and distinct

Vein

Convergent, difficult to follow interconnections. Connections show irregular networks.

  1. Supply/drainage

Artery

Supply can be predicted in arteries.

Vein

Similar to arteries, exception; Dural sinuses and hepatic portal circulatory system.

  1. Colour of blood

Artery

Blood in the arteries is the oxygenated blood in the circulatory system usually present in the left chambers of the heart and the pulmonary veins.

Vein

The colour of veins is because of the haemoglobin, to which oxygen merges. De-oxygenated blood is dark in colour due to the colour difference between deoxyhaemoglobin and oxyhaemoglobin. The blue impression of surface veins is triggered by scattered away blue light from the outer side of the venous tissues if the vein is 0.5 mm deeper. Blood colour in veins looks purple through the translucent skin.

  1. Pulsation

Artery

Pulsation is present in arteries with every heartbeat.

Vein

Pulsation is absent in veins.

  1. Function

Artery

The arteries form the basis of the circulatory system and their main function is to transport oxygen and nutritional elements by means blood to all the cells in the body. Arteries also eliminate CO2 and other waste elements, support chemical balance, movement of proteins, cells and other substances of the immune set up.

Vein

The veins are responsible to carry de-oxygenated blood from the tissues back to the heart. The exceptional veins are the pulmonary veins and the umbilical veins.

  1. Delivery

Artery

Blood is pumped into the aorta

Vein

Blood flows back through coronary sinus and interior venae carvae.

  1. Movement of blood

Artery

Spurty movement of blood with pulse.

Vein

Sluggish movement of blood.

  1. Walls

Artery

Arterial walls are rigid.

Vein

Veins possess collapsible walls

  1. Types

Artery

Pulmonary and systematic arteries

Vein

Pulmonary veins, systematic veins, superficial veins and deep veins.

  1. Disease

Artery

Artherogenesis- myocardial ischemia

Vein

Deep venous thrombosis

Summary of Artery and Vein 

The points of difference between an artery and a vein have been summarized below:

Comparion Table

Arteries VERSUS Veins

 


Search DifferenceBetween.net :

Custom Search


Help us improve. Rate this post! 1 Star2 Stars3 Stars4 Stars5 Stars
Loading...

Email This Post Email This Post : If you like this article or our site. Please spread the word. Share it with your friends/family.



Leave a Response

Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment.

References :


[0]Image credit: https://upload.wikimedia.org/wikipedia/commons/thumb/3/35/Artery.svg/612px-Artery.svg.png

[1]Image credit: https://upload.wikimedia.org/wikipedia/commons/thumb/3/32/Vein.svg/500px-Vein.svg.png

[2]Vrancken Peeters, M. P. F., Gittenberger-de Groot, A. C., Mentink, M. M., Hungerford, J. E., Little, C. D., & Poelmann, R. E. (1997). Differences in development of coronary arteries and veins. Cardiovascular research, 36(1), 101-110.

[3]Wong, A. P., Nili, N., & Strauss, B. H. (2005). In vitro differences between venous and arterial-derived smooth muscle cells: potential modulatory role of decorin. Cardiovascular research, 65(3), 702-710.

Articles on DifferenceBetween.net are general information, and are not intended to substitute for professional advice. The information is "AS IS", "WITH ALL FAULTS". User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages.


See more about : ,
Protected by Copyscape Plagiarism Finder