Observation

This question was attempted by many candidates and their performance was good.  In part (a) candidates could not correctly  name the parts labelled I,II,III,IV,V,VI,VIII of the digestive system and associated organs in humans.
In part (b), candidates correctly stated functions each of the parts labelled I and III.  In part (c) candidates also correctly mentioned disorders associated with the part labelled I

The expected answers are as follows:

4(a)   NAME OF THE PARTS LABELLED
I   - stomach
II   - pancreas
III  - large intestine
IV – small intestine
V  - anus
VI – appendix
VII – liver
VIII – oesophagus                      

                     
(b)      FUNCTIONS OF PARTS LABELLED I AND III
FUNCTIONS OF PART LABELLED I

stores food

produces gastric juice

produces hydrochloric acid

churning of the food materials

mixing food materials

 
FUNCTIONS OF PART LABELLED VII

detoxification – destroys toxins in the blood

deamination     - nitrogen is removed from amino acids and converted to urea

converts amino acids to carbohydrates / transamination

remove excess glucose from the blood / converts excess glucose to glycogen

manufactures and secretes bile into the gall bladder

produces heparin

produces blood cells

storage of iron

heat production

storage of vitamins/named

 
( c )    DISORDERS ASSOCIATED WITH PART LABELLED I

peptic ulcer

gastro enteritis

dyspepsia / indigestion

constipation