better gaseous exchange

Question 1

define gaseous exchange

Answer 1

where oxygen from the alveoli goes into the bloodstream and carbon dioxide come out and into the alveoli

Question 2

define alveoli

Answer 2

tiny air sacs in the lungs

Question 3

explain step 1

Answer 3

oxygen that is breathed in reaches the alveoli

Question 4

explain step 2

Answer 4

the oxygen passes through the diffusion pathway into the red blood cells in the capillaries

Question 5

explain step 3

Answer 5

oxygen- haemoglobin-oxihaeogloben

Question 6

explain step 4

Answer 6

carbon dioxide goes into the alveoli and is breathed out

Question 7

explain step 5

Answer 7

at same time haeoglogen carries co2 the waste product into the capilaries in the lungs

Question 8

explain step 6

Answer 8

oxihaemoloben is carries all around the body

Question 9

how does the body help gaseous exchange occur efficiently

Answer 9

large surface area, very thin walls, moist lining, good blood supply

Question 10

how does a large surface area help gaseous exchange

Answer 10

amount a shape of alveoli causes large area for process to occur

Question 11

how does this walls help gaseous exchange

Answer 11

alveoli has very thin walls which creates a short diffusion pathway

Question 12

how does moist lining help gaseous exchange

Answer 12

alveoli sacs are moist inside allowing gases to diffuse easily

Question 13

how does good blood supply help gaseous exchange

Answer 13

alveoli are surrounded by thousands of blood capillaries which create lots of space for gaseous exchange to occur