Heart and blood.

How many chambers does the heart have?

• 4

• 10

• 3

• 1

How big is the heart?

• Size of a golfball

• Size of your fist

• Size of your eyeball

• Size of your head

How many atria are there?

• 1

• 7

• 2

• 4

How many ventricles are there?

• 1

• 2

• 10

• 0

What keeps blood flowing in the right direction?

• Atria

• Chambers

• Valves

• Veins

The heart is made of which of the following types of muscles?

• Cardiac muscle

• Striated muscle

• Smooth muscle

• None of the above

Which of the following are chambers of the heart?

• Valves

• Atrium and ventricle

• Arteries and veins

• Sinoatrial nerve

How are arteries and veins different?

• One is bigger than the other.

• The arteries carry more blood than the veins.

• The arteries carry blood away from the heart while veins carry blood to the heart.

• The veins carry blood away from the heart while arteries carry blood to the heart.

How many blood vessel types do humans have?

• 4

• 5

• 3

• 2

Human blood vessels are

• artries, capillaries, and atria

• ventricles, atria and pulmonary veins

• capillaries, artries, and veins

• veins, artries, and aorta