Figure A shows the human alimentary canal


#1

Figure A shows the human alimentary canal.
(i) In Fig. A label structures T, U and V.
(ii) Name the secretion, which passes down tube W and explain how it helps in fat digestion. .
(iii) In case of diarrhoea, name the major process in region X which is no longer occurring normally.


#2

(i) T- Oesophagus, U- Liver, V- Small intestine.
(ii) The secretion which passes down tube W is bile. Role of bile in fat digestion:
(a) It makes the acidic food alkaline to facilitate the action of enzymes, lipase on it.
(b) Bile salts break the fats present in the food into small globules for enzymes to act.
(iii) In case of diarrhoea, the process of absorption of water is not occurring normally in region X.