Digestion Flashcards Preview

Biology > Digestion > Flashcards

Flashcards in Digestion Deck (16):
1

Peristalsis

-muscular contractions
-squeeze food

2

Ingestion

Putting food/drink into your mouth

3

Digestion

Breaking drown big molecules into small molecules
-mechanical = teeth and stomach muscles
-chemical = enzymes and bile

4

Absorption

Moving molecules through the walls of the intestine into the blood
-small molecules in small intestine
-water in large intestine

5

Assimilation

Digested molecules move into body cells

6

Egestion

Undigested food forms faeces which are removed through the anus

7

Villi

-large surface area
-good blood supply (capillaries)
-diffusion
-one cell thick
-permeable

8

Mouth

-salivary gland
-amylase
-teeth

9

Stomach

-pepsin
-HCl (kill bacteria and optimum pH)

10

Liver

-bile is produced

11

Oesophagus

Muscular tube connecting the mouth and stomach

12

Pancreas

-protease
-amylase
-lipase
-into small intestine

13

Gall bladder

-bile is stored

14

Small intestine

-protease, amylase, lipase
-nutrients absorbed

15

Large intestine

-excess water absorbed

16

Bile

-small intestine
-neutralises HCl
-emulsifies fats (large surface area)