The Heart and Blood Vessels (structure of the heart)

Question 1

What separates the heart into two sides?

Answer 1

A wall called a septum

Question 2

What does the septum of the heart do?

Answer 2

It is a wall which splits the heart into two sides

Question 3

How many chambers are there in a heart?

Answer 3

There are four chambers

Question 4

What are the two upper chambers of the heart called?

Answer 4

Atria

Question 5

How many atria are there in a heart?

Answer 5

There are two

Question 6

Where are the atria located in the heart?

Answer 6

They are the upper two chambers of the heart

Question 7

Where do the atria pump blood to?

Answer 7

The lower chambers of the heart called the ventricles

Question 8

What type of walls do atria have?

Answer 8

They have thin walls

Question 9

Why do atria have thin walls?

Answer 9

As they only have to pump blood for a short distance

Question 10

Where do the ventricles of the heart pump blood?

Answer 10

They pump blood out of the heart

Question 11

Which ventricle pumps blood to the lungs?

Answer 11

The right ventricle

Question 12

Where does the right ventricle pump blood?

Answer 12

To the lungs

Question 13

Which ventricle pumps blood to the head and body?

Answer 13

The left ventricle

Question 14

Where does the left ventricle pump blood?

Answer 14

To the head and body

Question 15

Why are the walls of the left ventricle much thicker and stronger than the walls of the right ventricle?

Answer 15

As there is a much longer circuit for the blood in the left ventricle to go through then the blood in the right ventricle

Question 16

What separates the atria and ventricles from each other?

Answer 16

Valves

Question 17

What hold valves in place in the heart?

Answer 17

Tendons

Question 18

What is the role of tendons in the heart?

Answer 18

They hold the valves in place to separate the atria from the ventricles

Question 19

What are tendons?

Answer 19

They are tough cords which are also called heart strings

Question 20

What are tough cords which are also called heart strings?

Answer 20

Tendons

Question 21

What attaches tendons to the walls of the heart?

Answer 21

Small projecting muscles

Question 22

What do small projecting muscles attach to the walls of the heart?

Answer 22

Tendons

Question 23

What do the valves of the heart ensure?

Answer 23

They ensure that blood can only flow from the atria to the ventricles and prevent the backflow of blood

Question 24

What ensures that blood can only flow from the atria to the ventricles in the heart?

Answer 24

Valves

Question 25

What is the valve on the right-hand side of the heart called?

Answer 25

The tricuspid valve

Question 26

Where is the tricuspid valve found in the heart?

Answer 26

The right-hand side of the heart

Question 27

How many flaps does the tricuspid valve have?

Answer 27

Three

Question 28

What is the valve on the left-hand side of the heart called?

Answer 28

The bicuspid valve

Question 29

Where is the bicuspid valve found in the heart?

Answer 29

The left-hand side of the heart

Question 30

How many flaps does the bicuspid valve have?

Answer 30

Two

Question 31

From where to where do the semilunar valves of the heart control the flow of blood?
(2)

Answer 31

They allow blood to flow out of the heart into the pulmonary artery and the aorta

They also prevent blood returning to the heart

Question 32

What are the two main arteries of the heart?

Answer 32

The pulmonary artery

The aorta