Blood Vessels

How many blood vessel types do humans have?

• 4

• 5

• 3

• 2

Human blood vessels are

• arteries, capillaries, and atria

• ventricles, atria and pulmonary veins

• capillaries, arteries, and veins

• veins, arteries, and aorta

The thickest and strongest blood vessel is the

• vein

• artery

• capillary

• both veins and capillaries

The blood vessel that has valves at intervals...

• capillary

• artery

• vein

• none of the above

Valves in veins

• support them

• protect them

• prevent the backward movement of blood inside them

• provide them elesticity

Which of the blood vessels do you think have greatest blood pressure?

• veins

• capillaries

• atria

• arteries

Carry blood away from heart; mostly oxygen-rich

• Arteries
• Veins
• Capillaries

Carry blood toward heart; mostly oxygen-poor

• Arteries
• Veins
• Capillaries

These are one cell layer thick

• arteries

• capillaries

• veins