Heart

Question 0

The two lower chambers are called the __________, witch pump blood back to the rest of the arteries to the rest of the body.

Answer 0

Ventricles

Question 1

The two upper chamber are called the ___________ ,witch receive blood from the veins.

Answer 1

Atria

Question 2

1. The human heart has __ chambers
2. A frog has __ chambers
3. A fish has ___ chambers

Answer 2

1. 4
2. 3
3. 2

Question 3

How come when you exercise your pulse and heart rate go up?

Answer 3

When you exercise your muscles need more energy. Your heart rate must go faster to provide the oxygen they need to produce energy