Digestion

Question 1

Mouth

Answer 1

Food is chewed saliva contains amylase to digest carbohydrates

Question 2

Oesophagus

Answer 2

Muscular tube that pushes food along by persistalis

Question 3

Stomach

Answer 3

Mechanical(churning)and chemical(enzymes)digestion occur .Acid is produced to kill bacteria

Question 4

Ileum/small intestines

Answer 4

Absorption occurs.It is long, folded ,villi

Question 5

Colon/large intestines

Answer 5

Water is reabsorbed

Question 6

Rectum

Answer 6

Faeces stored

Question 7

Anus

Answer 7

Egestion occurs

Question 8

Digestion

Answer 8

The process of breaking down large insoluble food molecules into small molecules that can be absorbed into the blood in the small intestines.

Question 9

Why does digestion have to occur

Answer 9

Because the nutrient groups that make up the majority of our diet(fat,carb,protein)are large and insoluble and need to be broken down to get into our bloodstream

Question 10

What are the 5 main process to digest

Answer 10

Ingestion
Digestion
Absorption
Assimilation
Egestion

Question 11

Ingestion

Answer 11

Food is taken through the mouth

Question 12

Digestion

Answer 12

Food is broken into solubles substances (chemical)digestion in the mouth the starts then stomach and then small intestines

Question 13

Absorption

Answer 13

The soluble products are absorbed into the bloodstream and then transported round the body

Question 14

Assimilation

Answer 14

The soluble products of digestion are taken into the cells where they are used in al, living cells

Question 15

Egestion

Answer 15

Removal of food waste via the anus(defecation)

Question 16

Explain the digestive system

Answer 16

Mouth
Oesophagus /pharynX
Right:stomach!bile duct,pancreas,large intestines(colon)rectum
Left:diaphragm,liver,gall bladder,small intestines(ileum)appendix,anus

Question 17

What is mechanical digestion

Answer 17

Mechanical digestion happens primarily in the mouth as our teeth cut and grind food into smaller pieces increasing the surface area.It also takes place in the stomach as it muscular/walls churn the food

Question 18

Chemical digestion

Answer 18

Starts in the mouth and continues into the stomach and small intestines.It involves breaking the large molecules into smaller molecules enzymes are responsible for chemical digestion.

Question 19

How many enzymes are there in digestion

Answer 19

3 main ones

Question 20

Amylase

Answer 20

Breaks down carbohydrates into simpler sugars
molecules
Found in mouth.pancreas and small intestines

Question 21

Protease

Answer 21

Breaks down protein into amino acids
Found in stomach pancreas and small intestines

Question 22

Lipase

Answer 22

Break down fat into fatty acids and glycerol molecules
Found in pancreas and small intestines

Question 23

How is the small intestine adapted

Answer 23

It is very long

The walls are folded

The walls are covered in villi

Question 24

What are more detailed adaptions to the small intestines

Answer 24

In addition, the walls are very thin - only 1 cell thick AND the small intestine has a very good blood supply to carry away the products of digestion.