The Circulatory System - The Heart

Question 1

What are the two types of Circulation around the body?

Answer 1

Pulmonary circulation and Systemic circulation

Question 2

Explain Systemic Circulation

Answer 2

Systemic circulation moves blood between the heart and the rest of the body.

Question 3

Explain Pulmonary Circulation

Answer 3

The pulmonary circulation involves the passage of blood from the heart to the lungs and back.

Question 4

How many chambers does the heart have and what are they?

Answer 4

The heart has four chambers, they are: the two atria [left and right atrium] and the two ventricles [left and right ventricle]

Question 5

Which chamber is the receiving chamber?

Answer 5

The Atrium

Question 6

Which chamber is the pumping chamber?

Answer 6

The Ventricle

Question 7

Explain the Receiving chamber

Answer 7

Receives deoxygenated blood from the body by the Superior and Inferior Vena Cava through the right
Atrium

Question 8

Explain the Pumping Chamber

Answer 8

Pumps blood to the lungs by the right ventricle through the Pulmonary Artery

Question 9

Explain the Right Atrium

Answer 9

The Right Atrium receives oxygen poor blood from other parts of the body and pumps it to the right ventricle

Question 10

Explain the Right Ventricle

Answer 10

The Right Ventricle pumps to the oxygen poor blood to the lungs where it becomes oxygenated

Question 11

Explain the Left Atrium

Answer 11

The Left Atrium receives oxygen rich blood from the lungs and pumps it to the Left Ventricle

Question 12

Explain the Left Ventricle

Answer 12

The Left Ventricle pumps the oxygen rich blood out to the body supplying all organs

Question 13

What are Heart Valves?

Answer 13

Heart valves are parts of your heart that act like doors

Question 14

What do heart valves do?

Answer 14

The valves prevent the backward flow of blood.

Question 15

What are the four types of Heart Valves and where are they located?

Answer 15

Tricuspid valve and it is located between the right atrium and right ventricle

Pulmonary valve and it is located between the right ventricle and the pulmonary artery

Mitral valve/Bicuspid and it is located between the left atrium and the right ventricle

Aortic valve and it is located between the left ventricle and the aorta

Question 16

What is the Aortic Valve’s job?

Answer 16

The Aortic Valve helps to keep blood flowing in the correct direction
through the heart.

It separates the heart’s main pumping chamber (left ventricle) and the main artery that supplies oxygen-rich blood to your body (aorta)

Question 17

What is the Mitral Valve’s job?

Answer 17

It helps to keep your blood flowing in the right direction and helps to prevent blood from leaking back into the left atrium

Question 18

Describe the open tricuspid and the mitral valve

Answer 18

Blood flows from the right atrium into the right ventricle through the open tricuspid valve and from the left atrium into the left ventricle
through the open mitral valve.

Question 19

Describe the closed tricuspid valve and the mitral valve

Answer 19

When the right ventricle is full, the tricuspid valve closes and keeps blood from flowing backward into the right atrium when the ventricle contracts.

When the left ventricle is full, the mitral valve closes and keeps blood
from flowing backward into the left atrium when the ventricle
contracts.

Question 20

Describe the flow of blood through the heart

Answer 20

First, blood returns from the body to the right atrium.

The right atrium, now full of oxygen-depleted blood, pumps the blood
through the tricuspid valve into the right ventricle.

Then the right ventricle contracts to pump blood through the pulmonary
valve into the pulmonary artery.

Question 21

Describe the flow of blood through the heart

Answer 21

The pulmonary artery brings blood away from the heart to the lungs where the blood receives the oxygen we breathe, becoming oxygen-rich blood.

At the same time the above process is occurring, oxygen-rich
blood is returning from the lungs by way of the left atrium.

Question 22

Describe the flow of blood through the heart

Answer 22

The left atrium then moves the blood through the mitral valve into the left ventricle.

When the left ventricle contracts, it moves blood through the aortic valve into the aorta. The aorta then provides blood to the rest of the
body.