Pig Part C (Circulatory System)

Question 1

What organs does the circulatory system include?

Answer 1

Heart, blood vessels and blood

Question 2

The heart is enclosed in a protective sac of tissue called the

Answer 2

pericardium

Question 3

The _______ divides the left side of the heart from the right side of the heart.

Answer 3

septum

Question 4

How many chambers does a human heart have?

Answer 4

four

Question 5

The upper chambers are called the

Answer 5

atria

Question 6

the bottom chambers are called the

Answer 6

ventricles

Question 7

The heart functions as two separate pumps. The right side of the heart pumps blood from the heart to the lungs and is called the

Answer 7

pulmonary circulation pathway.

Question 8

Oxygen-rich blood from the lungs (where carbon dioxide was exchanged for oxygen) flows into the left side of the heart and is pumped to the rest of the body. This is called the

Answer 8

systemic circulation pathway.

Question 9

Blood that returns to the right side of the heart is oxygen-poor because

Answer 9

cells have already absorbed the oxygen. The cycle starts again when this blood goes to the lungs.

Question 10

Why are valves important in the heart?

Answer 10

They keep blood moving through the heart in only 1 direction

Question 11

What are the 3 types of blood vessels in the circulatory system?

Answer 11

Arteries, capillaries and veins

Question 12

Artery

Answer 12

Carries oxygen rich blood away from the heart to the rest of the body

Question 13

Capillaries

Answer 13

bring nutrients and oxygen to cells; removes CO2 and waste from cells

Question 14

veins

Answer 14

returns oxygen poor blood back to the heart from the rest of the body