The Human Body

Question 1

Give 4 general functions of the liver

Answer 1

Secretes bike
Converts glucose to glycogen
Converts access glucose to fat
Stores minerals such as iron

Question 2

The acid produced by stomach does not destroy its walls explain why this is possible

Answer 2

The mucus glands on the mucosa layer secretes thick mucus that acts as a barrier between the acid and the wall of the stomach

Question 3

Explain why the pancreas is regarded as an endocrine as well as an exocrine gland 5 points

Answer 3

acts as an exocrine gland because it has a duct

• to transport its secretion to the site of action
• It also acts as an endocrine gland because it secretes hormones
• that are released directly into the blood ~/ blood transports
• hormones to the target organ.

Question 4

State the function of pylorus

Answer 4

Controls the movement of chyme from the stomach to the small intestine

Question 5

Name the digestive gland found on the mucosa later of the stomach

Answer 5

Gastric glands

Question 6

Name the acid secreted by the gastric gland

Answer 6

Hydrochloric acid

Question 7

Explain 2 ways which the bile is structurally suited for the efficient aborbtion of digested nutrients

Answer 7

The bile will not be released into the duodenum
No emulsification is possible
Enzymes cannot digest fats into fatty acids and glycerol

Question 8

what part of the digestive system is responsible for the absorbtion of water

Answer 8

colon

Question 9

what part of the digestive system is responsible for breaking down of food molecules by mechanical and chemical digestion

Answer 9

stomach

Question 10

what part of the digestive system contains the sphinicer muscle responsible for controlling defecation

Answer 10

Anus

Question 11

by which process is food moved through the structure

Answer 11

peristalsis

Question 12

name the glands that release their secretions into the small intestine

Answer 12

liver and pancrease