respiratory system

Question 1

what are the main components of the respiratory system?

Answer 1

• nasal cavity
• mouth
• larynx
• pharynx
• trachea
• bronchi
• alveoli
• bronchioles
• diaphram
• rib cage

Question 2

what is the function of the lungs?

Answer 2

the organ where the gas exchange occurs.

Question 3

what is the function of the nasal cavity?

Answer 3

where you breathe in air and is filtered through the nose hair.

Question 4

what is the function of the pharynx?

Answer 4

acts as the passageway for the air to come through.

Question 5

what is the function of the larynx?

Answer 5

where the voice box is located - sound comes out from here

Question 6

what is the function of the trachea?

Answer 6

where the windpipe is located - oxygen and carbon dioxide goes in and out through the trachea.

Question 7

what is the function of the bronchioles?

Answer 7

bronchioles are the smaller branches of the bronchi which delivers air into the alveoli.

Question 8

what is the function of the alveoli?

Answer 8

the specific spot whre gas exchange occurs. It takes in oxygen and removes carbon dioxide to be exhaled.

Question 9

what is respiration?

Answer 9

• the exchange of gases between the cells, blood and atmosphere
• the normal bpm is 12-18
• there are two phases of breathing which are inspiration and expiration

Question 10

explain inspiration

Answer 10

• the process of air entering the lung
• the diaphram and intercostal muscles expand the rib cage which causes a decrease in air pressure which forces air to flow into the body to balance the pressure. it is warmed and humidified to allow breathing easier.

Question 11

explain expiration

Answer 11

• the process of air existing the lungs
• the intercostal muscles involved and the rib cage will naturally deflate which causes an increase in air pressure and forces air out of the lung.

Question 12

what happens to the respiration rate during movement?

Answer 12

during movement (physical activity), the body’s higher demand for oxygen triggers a response from the respiratory system.
- the respiration increases which increases the volume of air which allows greater amounts of oxygen being exchanged into the bloodstream and more carbon dioxide being removed so the body doesn’t have a build up of waste products.

Question 13

what is external respiration?

Answer 13

the gas exchange at the alveoli (alveoli and capillaries)
1. body brings deoxygenated blood in capillaries to alveoli to get rid of carbon dioxide.
2. carbon dioxide diffuses from capillaries into alveoli. at the same time, the oxygen diffuses from alveoli into blood.
3. oxygenated blood transported to the rest of the body.

Question 14

What is internal respiration?

Answer 14

the gas exchange between the oxygenated capillaries and cells in the body.
1. oxygenated capillaries flow around the body through the bloodstream.
2. oxygen is transported through blood attached to haemoglobin, and travels in the muscle attached to myoglobin
3. capillaries surround muscles which transmit oxygen into muscle and carbon dioxide out of muscle.
4. the exchange of gases across the cell membranes of the muscles is known as diffusion.
5. the carbon dioxide is taken to the lungs via the heart in order to removes the waste and receive oxygen again.