Question

giving three points of difference between vinus and arteries.what is the function of capillaries​

Answer 1

Answer:

Arteries carry blood away from the heart; the main artery is the aorta. ... Veins are blood vessels that bring blood back to the heart and drain blood from organs and limbs.Capillaries have one layer of cells (the endothelial tunic or tunica intima) where diffusion and exchange of materials takes place.

Explanation:

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Answer 2

1) Difference between veins and arteries.

Arteries and Veins

Arteries are the blood vessels that carry blood away from the heart, where it branches into even smaller vessels. Finally, the smallest arteries, called arterioles are further branched into small capillaries, where the exchange of all the nutrients and other waste molecules are carried out.

Veins are the blood vessels present throughout the body. They are tube-like, translucent structures that function by carrying deoxygenated blood from the tissues to the heart for re-oxygenation. Compared to arteries, veins are thin-walled.

》Types of Arteries

There are three different types of arteries:

• Elastic arteries: These are also known as conducting arteries that have a thick middle layer that stretches in response to each heart pulse.

• Muscular arteries: These are medium-sized arteries that draw blood from elastic arteries.

• Arterioles: These direct the blood into the capillaries. These are arterial divisions that transport blood away from the heart.

》Types of Veins

The different types of veins include:

• Deep Veins: These are located deep within the muscle tissue.

• Superficial Veins: These are closer to the surface of the skin.

• Pulmonary Veins: These transport oxygenated blood to the heart from the lungs.

• Systemic Veins: These are present throughout the body and transport deoxygenated blood to the heart for purification.

2) What is the function of capillaries.

• Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.