Circulatory System Review

These carry blood to the heart:

• arteries
• veins
• capillaries
• arterioles

These have valves that prevent backflow of blood

• arteries
• veins
• arterioles
• capillaries

The vessel that allows material exchange to take place between body cells and itself.

• arteries

• veins

• venules

• capillaries

The blood vessel that carries oxygenated blood back to the heart

• vena cava

• pulmonary vein

• pulmonary artery

• hepatic portal vein

Which vessels maintain the highest blood pressure?

• Veins

• Capillaries

• Arteries

How many layers of cells make up the wall of a capillary?

• 1

• 2

• 3

• 4

The highly branched nature of capillaries results in

• the blood vessel being very delicate.

• a high surface area for material exchange.

• a slow blood flow to allow more time for material exchange.

• all of the above.

Which of the following is a definition of tissue fluid?

• It is plasma that leaks out of the arterioles.

• It is plasma, without its proteins, that leaks out of the blood capillaries and bathe the body tissues.

• It is a fluid that is secreted by blood vessels to bathe the body tissues.

• It is the water found in our bodies.

Skeletal muscles help blood to move towards the heart when it

• contract.

• relax.

How many parts is the blood made up from?

• 3

• 1

• 5

• 4