Circulatory System

What is NOT part of the circulatory system?

• heart

• air passageway

• blood vessels

• blood

The roads of a city are similar to what structures in the circulatory system?

• hear

• air passageways

• blood vessels

• blood

What are the cells in the right atrium called that create an electric impulse for the heart to contract?

• valves

• impulse activator

• pacemaker

• aorta

What are the lower chambers of the heart called?

• atrium

• veins

• ventricles

• arteries

What are the smallest blood vessels that exchange gases, nutrients and wastes with the cells of the body?

• arteries

• veins

• capillaries

What are the functions of valves in the circulatory system?

• stimulate the heartbeat

• accelerated blood flow

• prevent the backward flow of blood

• serve as a cushion for friction

When fatty deposits build up in the arteries, this condition is known as

• a heart attack

• hypertension

• atherosclerosis

• a stroke

Which is plasma in your blood composed of

• 90% water

• glucose, amino acids and vitamins

• gases, minerals and hormones

• all answers are correct

Which blood cells carry oxygen in the circulatory system?

• red

• white

• platelets

• plasma

If you have an infection which type of blood cell increases

• red

• white

• platelets

• plasma