ABSORBTION OF MATIERALS

Question 1

what happens in the absorbition

Answer 1

oxygen is absobed into blood stream
co2 is removed from bloodstream

Question 2

Gas in lungs ?

Answer 2

oxygen and co2 enter and leave the blood by the lining of the lungs

Question 3

State the properties of the lungs from top to bottom

Answer 3

windpipe
brochi
bronichles
alveoli

Question 4

What are alveloli and whats 3 key features

Answer 4

-lined with mucus
-surrounded by a network of blood capillaries-large volume of gas exchange
-thin walls-thin so gasses can qucikly pass through
-large surface area-speeds up diffusion

Question 5

what are villi

Answer 5

small intensine that sppeds up absorbtion of materials into the small intestine(food|)

Question 6

Features of viili

Answer 6

thin-increases speed of absorbtion
large blood supply-surrounded by capillaries-transport glucose and amino acids
take in glycerol and fatty acids
Lacteal-take and transport the products of fat digestion