absorption of materials

Question 1

name the three small soluble products produced during digestion reactions

Answer 1

starch > amylase > glucose
protein > protease > amino acids
fat > lipase > fatty acids and glycerol

Question 2

where are nutrients (glucose and amino acids) from food absorbed?

Answer 2

villi in the small intestine

Question 3

where are fatty acids and glycerol absorbed ?

Answer 3

the lacteal

Question 4

which factors increase the efficiency of absorption?

Answer 4

large surface area
thin walls
extensive blood supply

Question 5

what is the body’s organ of gas exchange?

Answer 5

the lungs

Question 6

when we breathe in air, where does it go?

Answer 6

down the trachea (windpipe)
it then branches off into the left and right bronchus which further branches into the bronchioles.

Question 7

how are the windpipe and bronchus supported?

Answer 7

rings of cartilage

Question 8

where is gas exchanged with the blood in the lungs?

Answer 8

the alveoli (air sacs) consist of a large number of alveoli providing a large surface area. Oxygen and carbon dioxide are absorbed through the thin alveolar walls to or from the many blood capillaries