The Digestive System

Question 1

Digestion what are the 5 phases?

Answer 1

1. Ingestion
2. Movement
3. Mechanical and chemical digestion
4. Absorption
5. Elimination

Question 2

2 types of digestion

Answer 2

Mechanical
Chemical

Question 3

What are the 8 things in alimentary tract?

Answer 3

Mouth
Pharynx
Oesophagus
Stomach
Small intestine
Large intestine
Rectum
Anal canal

Question 4

Accessory organs of the alimentary tract?

Answer 4

Saliva glands
Pancreas
Liver
Biliary tract

Question 5

Function of the pharynx (mouth)

Answer 5

Teeth break down food into small pieces. Tongue mixes food with saliva

Question 6

What is the epiglottis?

Answer 6

Flap structure at the back of the throat that closes over the trachea preventing food from entering it.

Question 7

What is the function of the Oesophagus?

Answer 7

Secrete mucus

Question 8

Function of the stomach?

Answer 8

Stores the food you eat, breaks it down into tiny pieces.

Question 9

Function of small intestine?

Answer 9

Nutrients from the food pass into the bloodstream through the small intestine walls
Absorbs
Vitamins and minerals

Question 10

Function of large intestine?

Answer 10

Bacterial digestion
Absorbs more water
Concentrate wastes

Question 11

Function of the liver?

Answer 11

Filters out toxins and waste including drugs and alcohol
Produces bile

Question 12

Function of gall bladder?

Answer 12

Stores bile from the liver, releases it into the small intestine.

Question 13

Function of pancreas

Answer 13

Regulates blood sugar by producing insulin

Question 14

what is the approximate daily intake of water required by the average adult?

Answer 14

3 litres

Question 15

monosaccharides and polysaccharides are examples of what?

Answer 15

carbohydrates

Question 16

they consist of highly complex molecules whose basic components are amino acids?

Answer 16

proteins

Question 17

it is found in milk and eggs, but can also be synthesised by the action of sunlight on the skin?

Answer 17

vitamin D

Question 18

it is a complex of various vitamins, each being identified by a number.

Answer 18

vitiamin. C

Question 19

it is found in fish liver oils and a lack of it causes changes in epithelium

Answer 19

vitamin A

Question 20

a deficiency of which vitamin gives rise to each of these conditions?
night blindness?

rickets?

scurvy?

Answer 20

night blindness- vitamin A

Rickets- vitamin D

scurvy- vitamin C

Question 21

they are complex substances, small amounts of which are essential to life, but cannot be synthesised with the body

Answer 21

vitamins