Respiatory System

Question 1

What is respiration?

Answer 1

The release of energy from food

Question 2

Where does respiration take place?

Answer 2

In the cells of the body

Question 3

What is the function of the respiratory system?

Answer 3

To breathe

Question 4

What is breathing?

Answer 4

Taking an oxygen for respiration, letting out carbon dioxide and water vapour from respiration

Question 6

Label the respiratory system

Answer 6

Good job!

Question 7

What does the nose do?

Answer 7

Takes in air and filters it with tiny hairs

Question 8

What is the pleura?

Answer 8

Membrane that helps lungs to move easily

Question 9

What are the ribs?

Answer 9

Bones that protect the lungs

Question 10

What are the intercostal muscles?

Answer 10

Muscles that move the chest during breathing

Question 11

What is the diaphragm?

Answer 11

A muscle that controls the volume of the chest

Question 12

What is the epiglottis?

Answer 12

A flap of skin that prevents food going into the trachea

Question 13

What is the trachea?

Answer 13

The tube that takes air down to the lungs

Question 14

What is the bronchus?

Answer 14

A tube that carries air into a lung

Question 15

What are bronchiole?

Answer 15

Very narrow tubes that carry air to the alveoli

Question 16

What is the lung?

Answer 16

Organ in the body where gaseous exchange happens

Question 17

What are the alveoli?

Answer 17

Tiny air sax for gases exchange

Question 18

Name the five steps of What happens as youre inhaling

Answer 18

1. The intercostal muscles contract, causing the ribs to move up and out.
2. The diaphragm contracts and moves down.
3. The volume of the lungs increases.
4. The pressure on the lungs decreases.
5. Air is sucked in.

Question 19

Name the five steps of exhaling

Answer 19

1. Intercostal muscles relax, causing the ribs to move down and in.
2. The diaphragm relaxes and arches back up.
3. The volume of the lungs decreases.
4. The pressure on the lungs increases.
5. Air is forced out.

Question 20

Where does gas exchange happen?

Answer 20

In the alveoli

Question 21

Draw a diagram of an alveoli

Answer 21

Good job!

Question 22

How does gas exchange happen in the alveoli? (4)

Answer 22

1. Alveoli have thin walls that allow for gases to diffuse easily through them.
2. Alveoli are surrounded by thin capillaries that carry gases to and from lungs.
3. Oxygen in the alveoli moves into the blood in the capillary.
4. Carbon dioxide and water move into the alveoli from the blood in the capillary.

Question 23

How many breaths per minute does the average adult take?

Answer 23

12 to 16

Question 24

How does the nose help the lungs?

Answer 24

The nose filters and moistens air before it reaches the alveoli in the lungs

Question 25

How do the trachea bronchi and bronchioles assist each other?

Answer 25

They work together to bring air down to the lungs and up from the lungs

Question 26

How do the intercostal muscles and diaphragm help each other?

Answer 26

These muscles contract at the same time to draw air into the lungs and relax at the same time to push air out of the lungs