Cardiovascular and respiratory systems

Question 1

4 functions of the cardiovascular system.

Answer 1

1. Transport blood through the body and cells.
2. Carries oxygen and nutrients to the body and cells.
3. Removes CO2 and waste from body and cells.
4. Fights disease.

Question 2

What does the cardiovascular system consist of? (3 things)

Answer 2

Heart, blood, and blood vessels

Question 3

What is the first loop of the CVS?

Answer 3

The first loop leads from the heart to the lungs. Here, the blood releases CO2, picks up O2, and returns to the heart.

Question 4

What is the second loop of the CVS?

Answer 4

The second loop goes to the rest of the body, delivering O2 and nutrients and picking up waste.

Question 5

What is the atrium and what is its function?

Answer 5

Smaller chambers on top of the heart that receive the blood entering the heart. Electrical impulses, aka the “pacemaker” then move the blood to the ventricles.

Question 6

What are the ventricles and what do they do?

Answer 6

Larger chambers on the bottom of the heart that pump blood to the body.

Question 7

What is the septum?

Answer 7

A wall of tissue that separates the atria and ventricles.

Question 8

Where are valves and what do they do?

Answer 8

They are between the atria and the ventricles and control blood flow (one way)

Question 9

What produces the heartbeat sound?

Answer 9

The opening and closing of valves.