gas exchange and breathing

Question 1

gas exchange system parts (9)

Answer 1

trachea, bronchus, bronchioles, alveoli, diaphragm, intercostal muscles, lung and ribcage

Question 2

what is lung volume

Answer 2

the amount of air that you can breathe into your lungs in one breath

Question 3

what can reduce lung volume

Answer 3

some diseases and smaller body size

Question 4

gas exchange process in alveoili

Answer 4

air breathed in enters alveoli, oxygen diffuses from alveoli to blood, blood carries to body cells, oxygen for respiration, blood carries from body cells contain a lot of co2 from respiration, co2 diffuses from blood to alveoli and breathed out

Question 5

adaptations of lungs that make them suited for gas exchange

Answer 5

good blood supply, large inside surface area, moist linings

Question 6

when air is drawn into lungs what happens to the volume of cavity, pressure and diaphragm

Answer 6

cavity increases, pressure decreases and diaphragm moves down

Question 7

when air is breathed out what happens to the volume, pressure and diaphragm

Answer 7

volume decreases, pressure increases, diaphragm relaxes

Question 8

3 things that can affect the gas exchange system

Answer 8

exercise, asthma and smoking