The Respiratory System

Question 1

What are the parts of the lung? (6)

Answer 1

Trachea, lungs, alveoli, bronchi, bronchioles, diaphragm

Question 2

During inspirationwhat happens to your diaphragm?

Answer 2

Contracts and flattens

Question 3

During expirationwhat happens to your diaphragm?

Answer 3

​Diaphragm back to dome shape​

Question 4

The processes (9)

Answer 4

1. The diaphragm contracts and flattens increasing the size of the chest cavity
2. Pressure inside the lungs decreases and air enters the body through the nose and mouth
3. Air goes down the trachea
4. Trachea splits into 2 bronchi (one to each lung)
5. Bronchi split into smaller bronchioles
6. Bronchioles have small air sacs at the end called alveoli
7. Diffusion takes place at the alveoli
8. Diaphragm relaxes back into a dome shape
9. Pressure inside the lungs increases and air is forced out of the nose and mouth

Question 5

Air we breathe in levels (oxygen , carbon dioxide, nitrogen, water vapour)

Answer 5

Amount in inhaledair
Oxygen: 21%
Carbon dioxide: 0.04%
Nitrogen: 78%
Water vapour: small amount

Question 6

Tidal volume:

Answer 6

This is the amount you breathe in and out in one normal breath.

Question 7

Vital capacity:

Answer 7

This is the maximum volume of air you can breathe out after breathing in as much as you can. (peak flow)

Question 8

Gaseous exchange at the alveoli

Answer 8

Gaseous exchange takes places at the alveoli. The alveoli are tiny air sacs inside the lungs. When you breathe in, they fill with air. The alveoli are covered in tiny capillaries (blood vessels). Gases can pass through the thin walls and travel into the bloodstream.

Question 9

What happens to respiratory system when we start to exercise? (breathing rate, demand for oxygen, tidal volume)

Answer 9

Exercise causes an increase in breathing rate and depth of breathing.
This is due to a greater need for oxygen in the body and removal of carbon dioxide.
Tidal volume can increase up to 5-9 times higher than at rest to cope with exercise demands.

Question 10

During expirationwhat happens to your ribs?

Answer 10

Ribs down and in​

Question 11

During expirationwhat happens to your chest cavity?

Answer 11

Chest cavity reduces

Question 12

During inspirationwhat happens to your chest cavity?

Answer 12

Chest cavity expands

Question 13

During inspirationwhat happens to your ribs?

Answer 13

Ribs up and out

Question 14

Air we breathe out levels (oxygen , carbon dioxide, nitrogen, water vapour)

Answer 14

Amount in exhaledair
Oxygen: 16%
Carbon dioxide: 4%
Nitrogen: 78%
Water vapour: large amount

Question 15

What are the effects of us becoming fitter on our respiratory system?

Answer 15

As we become fitter, the body’s Vital Capacity will increase as will blood carrying capacity. These adaptations will contribute to better performance.

Question 16

With training what does it do to our gaseous exchange process?

Answer 16

With training this process of gaseous exchange becomes more efficient and therefore improves performance.