Structure of the heart

Question 1

What is the heart?

Answer 1

A muscular pump

Question 2

How many chambers does the heart have?

Answer 2

4 chambers

Question 3

What are the chambers in the heart?

Answer 3

Left ventricle
Right Ventricle
Left atrium
Right atrium

Question 4

What do both left and right atria do in the heart?

Answer 4

Collects the blood as it enters the heart

Question 5

What do the left and right ventricles do in the heart?

Answer 5

Pump blood out of the heart

Question 6

What is the atria’s made up of, the top or the bottom half of the heart?

Answer 6

The top half

Question 7

What is the ventricles made up of, the top or the bottom half?

Answer 7

The bottom half

Question 8

What is the central partition called which divides the heart into two sides, the left side and the right side

Answer 8

The septum

Question 9

What does the right side of the heart pump?

Answer 9

Venous blood (Deoxygenated blood)

Question 10

What does the right side of the heart pump?

Answer 10

Pumps oxygenated blood from the lungs around the rest of the body.

Question 11

One half of the heart has thicker walls which half do you think it is and why?

Answer 11

Blood from the left ventricle has to go right around the body, so this ventricle is thicker. Blood from the right ventricle only has to reach the lungs, so this is thinner.

Question 12

What are the blood vessels in the heart?

Answer 12

Pulmonary Artery
Aorta
Pulmonary vein
Vena Cava

Question 13

What does the pulmonary artery do?

Answer 13

Carries deoxygenated blood from the heart to the lungs.

Question 14

What does the aorta do?

Answer 14

Oxygenated blood is pumped at high pressure from the heart to the body

Question 15

What does the vena cava do?

Answer 15

Returns deoxygenated blood to the heart.

Question 16

What does the pulmonary vein do?

Answer 16

Returns oxygenated blood to the heart.

Question 17

How does Venous blood (deoxygenated blood) get Arterial (oxygenated) again and how does Arterial blood (oxygenated blood) get sent to the working muscles?

Answer 17

1. The vena cava brings venous (deoxygenated) blood from the body into the right atrium, where it collects.
2. The venous blood passes from the right atrium to the right ventricle through a valve with three cusps, called the tricuspid valve.
3. The blood then passes through the pulmonary (semilunar) valve into the pulmonary artery, and on into the lungs where it will pick up oxygen
4. Oxygenated blood from the lungs returns to the heart through the pulmonary vein and collects in the left atrium.
5. It passes into the left ventricle through a valve with two cusps, the bicuspid valve
6. The oxygenated blood passes through the aortic (semilunar) valve and is ready to be sent round the body, through an artery called the Aorta.