Blood Circulatory System: Blood Vessels

Which of the following is not classified as a blood vessel?

• Artery

• Plasma

• Capillary

• Vein

Which of the following blood vessels carry blood away from the heart?

• Capillaries

• Veins

• Venules

• Arteries

Which of the following features are present in veins but not in arteries or capillaries?

• Valves

• High Blood Pressure

• Narrow Lumen

• Thick Muscular Walls

............................................. has the thinnest wall among all types of blood vessels.

Arteries have narrow lumen and thick walls to withstand ......................... blood pressure.

What allows veins to push blood back to the heart against gravity?

• Narrow lumen

• Muscle fibres

• Thick elastic walls

• Valves and skeletal muscle pressure

Presence of valves in veins help to prevent the ............................. of blood.

Explain how the structure of arteries helps them to carry blood under high pressure.

Why is it important for capillaries to have a very small diameter and thin walls?

Capillaries allows for the exchange of ........................

• Glucose

• Oxygen

• Salts

• All of the above