Heart and Blood Vessels TEST 25

Which of the following are the smallest blood vessels?

• artery

• vein

• venule

• capillary

The function of valves in the human circulatory system is to

• stimulate the heart beat.

• accelerate the flow of blood.

• prevent the backward flow of blood.

• serve as a cushion to prevent friction

If a blood vessel has valves, it is probably a(n)

• vein.

• artery.

• capillary

Blood vessels that carry blood away from the heart are called

• veins.

• arteries.

• capillaries.

Aorta

• 1

• 2

• 4

• 5

Tags

NGSS.MS-LS1-3

Left ventricle

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS1-2

Name this part.

• Right atrium

• Left ventricle

• Right ventricle

• Left atrium

This chamber of the heart RECEIVES blood returning from the body

• Right Atrium
• Right Ventricle
• Left Atrium
• Left Ventricle

The _________ pumps blood to the lungs.

• Right Atrium

• Right Ventricle

• Left Atrium

• Left Ventricle

What is the name of structure n?

• Semilunar valve

• Atrioventricular valve

• Mitral valve

• Aortic valve