circulatory system

The liquid, pale yellow part of blood is called

• Plasma

• Antigens

• Blood cells

• None of the above

A human body in average has

• 1-2 litres of blood

• 3-4 litres of blood

• 4-6 litres of blood

• 2-3 litres of blood

Largest artery in a human body

• Superior Vena Cava

• Inferior Vena Cava

• Aorta

• None of the above

Which is not a function of circulatory system?

• Protects the body against disease and infection.

• Clotting stops bleeding after injury.

• Circulates oxygen and removes carbon dioxide.

• Receiving information about the environment around us and generating responses to that information

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

• arteries

• capillaries

• bronchi

• veins

The following are ways to have a healthy circulatory system EXCEPT:

• Maintain a healthy weight.

• Don't smoke.

• Maintain a healthy, low-fat, low-cholesterol diet with more fruits, vegetables, and whole grains.

• Do not exercise your are still young and healthy.

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

WBC are also called -

• Erythrocytes

• Thrombocytes

• Leucocytes

• Plasma

The device used to hear heartbeats is called a______________

• manometer

• hydrometer

• thermometer

• stethoscope