25-Human Nutrition

Question 1

Distinguish between mechanical and chemical digestion

Answer 1

Mechanical:chewing or churning
Chemical:digestive enzymes

Question 2

What are symbiotic bacteria?

Answer 2

bacteria that live in or on another organism involving benefit

Question 3

What is meant by the term digestion?

Answer 3

The breakdown of food

Question 4

Why is digestion necessary?

Answer 4

solubility
absorption
transport

Question 5

Name a substance transported to the liver by the blood in the hepatic portal vein

Answer 5

amino acids

Question 6

Name the blood vessel that brings oxygenated blood to the liver

Answer 6

Hepatic artery

Question 7

Where is the liver located in relation to the stomach?

Answer 7

above to the right

Question 8

Where is bile stored?

Answer 8

gall bladder

Question 9

Role of bile salts

Answer 9

emulsify lipids into fat droplets

sodium hydrogen carbonate neutralises chyme

Question 10

Functions of the liver

Answer 10

Detoxifies-breaks down alcohol and drugs
Storage of vitamins and minerals
Deamination

Question 11

Human Dental Formula

Answer 11

2(i2/2 i1/1 pm2/2 m3/3)

Question 12

Functions of large intestine

Answer 12

absorption of water

egestion