Circulatory System

Doctors use which instrument to listen the heartbeat -

• Thermometer

• Suction Device

• Sphygmomanometer

• Stethoscope

The circulation of blood between heart and lungs

• Systemic circulation

• Pulmonary circulation

Largest artery in a human body

• Superior Vena Cava

• Inferior Vena Cava

• Aorta

• None of the above

The vessels that carry blood away from the heart are called _____________

• arteries

• capillaries

• bronchi

• veins

This is the thickest of the blood vessels. It leads away from the heart.

• veins
• capillaries
• arteries

This blood vessel has valves to prevent the back flow of blood. 

• veins
• capillaries
• arteries

The part of the heart that contains only oxygen-rich blood is. . . .

• 1 and 2

• 1 and 3

• 2 and 4

• 2 and 3

Which blood vessel carries blood from the lungs to the heart?

• Aorta

• Vena cava

• Pulmonary vein

• Pulmonary artery

Which of the following has walls that are one cell thick and is a site for diffusion?

• Vein

• Artery

• Capillary

• Aorta

Which side of the heart has oxygenated blood?

• Top

• Bottom

• Left

• Right