Arteries and veins are two main types of blood vessels that form the circulatory system along with the heart. The circulatory system is a closed system that begins and ends at the heart and arteries and veins form a significant portion of this closed system. In this article, we will compare these two kinds of blood vessels.
What is an Artery?
Arteries are the blood vessels that carry oxygen-rich blood from the heart and transport it to other parts of the body.
What is a Vein?
Veins are the blood vessels responsible for carrying de-oxygenated blood from the body to the heart.
Diagram of Differences between Arteries and Veins
Table of Differences between Arteries and Veins
|S.No.||Basis of Difference||Arteries||Veins|
|1.||Direction of Circulation||Arteries carry blood away from the heart to the tissues of the body.||Veins carry blood from the tissues of the body to the heart.|
|2.||Type of Blood||Arteries, except for the pulmonary artery, carry oxygenated blood.||Veins, except for the pulmonary veins, carry deoxygenated blood.|
|3.||Type of Walls||Arteries have thick and elastic muscular walls.||Veins have thin, non-elastic and lesser muscular walls.|
|4.||Location||Arteries are normally located deeper inside the body.||Veins are located comparatively at the outer side, beneath the skin.|
|5.||Presence and Absence of Valves||As the heart pumps blood with force arteries do not need valves to ensure the flow of blood in one direction. This is the reason valves are absent in Arteries.||Veins contain valves that ensures one-directional flow of blood. The valves help the blood to flow against the gravity.|
|6.||Size of Lumen||Lumen i.e. the hollow space inside the arteries is comparatively less. The internal diameter of arteries is about 4 mm.||Lumen i.e. the hollow space inside the veins is comparatively larger. The internal diameter of veins is about 5 mm.|
|7.||Pressure of Blood||The pressure of blood flow in artery is high.||The pressure of blood flow in veins is low.|
|8.||Color||Arteries are reddish in color.||Veins are blueish in color.|
|9.||Types||Arteries are of two types – Pulmonary artery and Systemic artery.||Apart from Pulmonary and Systemic veins are categorized as – superficial veins and deep veins.|
|10.||Volume||Arteries contain around 12% of total vascular capacity.||Veins contain around 60% of the total blood flow in the body.|
|11.||Pulse||Due to the high pressure of blood flow in arteries, the pulse is detectable.||Pulse is not detectable through veins as the pressure of the flow of blood is lower in veins.|
|12.||Walls||The walls of arteries are rigid.||The walls of veins are collapsible.|
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