PAPER 1 - respiratory system

Question 1

What is the structure of the respiratory system?

Answer 1

Nasal cavity
Mouth
Trachea
Alveoli
Bronchiole
Bronchus
Diaphragm
Lung

Question 2

Composition of air we breathe:

Answer 2

IN - 21% oxygen, 0.03% carbon dioxide
OUT - 16% oxygen, 4% carbon dioxide

Question 3

What is diffusion?

Answer 3

The movement of gas from an area of high concentration to an area of low concentration.

Question 4

Functions of the CV system

Answer 4

• Transport of oxygen + carbon dioxide
• Transport nutrients
• Clotting on wounds
• Regulation of body temperature

Question 5

Aerobic Respiration:

Answer 5

glucose + oxygen -> carbon dioxide + water + energy

Question 6

Anaerobic Respiration:

Answer 6

glucose -> lactic acid + energy

Question 7

vital capacity definition

Answer 7

maximum amount of air that can be breathed out after breathing in as much air as possible

Question 8

tidal volume

Answer 8

amount of air breathed in with each normal breath

Question 9

total lung capacity

Answer 9

total amount of air that the lungs can hold after the biggest possible breath in.

Question 10

what happens to the rates of breathing during exercise?

Answer 10

tidal volume increases as depth of breathing increases and the rate of breathing increases too.