Question

Identify the three basic types of blood vessels and their roles in the cardiovascular systemArteriesCapillariesVeins

Answer 1

Answer:

Arteries: carry the blood away from the heart to the body cells/tissues.

Capillaries:  the site for an exchange of substances between the blood and body cells.  

Veins: carry the blood towards the heart from the body cells/tissues.

Explanation:

The cardiovascular system has arteries, capillaries, and veins as the main blood vessels. The walls of arteries are mostly thick and therefore, their lumens are narrow. Thick walls allow them to withstand the higher blood pressure. The function of arteries is to carry the blood away from the heart to the body cells/tissues. They mostly carry oxygenated blood. However, pulmonary arteries are the exceptions that carry the deoxygenated blood.  

Walls in veins are thin. They have a wide lumen. Their function is to carry the blood towards the heart from the body cells/tissues. They mostly carry deoxygenated blood. However, pulmonary veins are the exceptions that carry the oxygenated blood to the heart.

Capillaries are the thin-walled blood vessels that serve as the site for an exchange of respiratory gases, nutrients, wastes and other substances between the blood and body cells.  

Answer 2

Answer:

The three main types of blood vessels present in the cardiovascular system are capillaries, arteries and veins.

Capillaries - The main function of the capillary is the transport of oxygen and nutrients to the cells and tissues of the body. The connection of the branches of the arteries with the veins is done by capillaries.

Arteries: The blood from the heart needs to travel all over the body. This function is performed by the arteries. The oxygenated blood flows in the arteries.

Veins: The deoxygenated blood from the body needs to travel from the body to the heart. This function is preformed by veins.