We feel sleepy just after taking meals because

Vitamin $A$ is synthesized from carotene in the ...... .

Choose the correct answer among the following:
$(a)$ Gastric juice contains
$(i)$ pepsin,lipase and rennin
$(ii)$ trypsin,lipase and rennin
$(iii)$ trypsin,pepsin and lipase
$(iv)$ trypsin,pepsin and renin
$(b)$ Succus entericus is the name given to
$(i)$ a junction between ileum and large intestine
$(ii)$ intestinal juice
$(iii)$ swelling in the gut
$(iv)$ appendix

Match the following structures with their respective location in organs:

$(a)$ Crypts of Lieberkuhn	$(i)$ Pancreas
$(b)$ Glisson's Capsule	$(ii)$ Duodenum
$(c)$ Islets of Langerhans	$(iii)$ Small intestine
$(d)$ Brunner's Glands	$(iv)$ Liver

Select the correct option from the following:

$A$ person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal. What are the various enzymatic types of glandular secretions in our gut helping digestion of food? What is the nature of end products obtained after complete digestion of food?

Select the correct match.

List-$I$	List-$II$
$(A)$ Hepatic lobule	$(i)$ Submucosal gland
$(B)$ Brunner's gland	$(ii)$ Base of villi
$(C)$ Crypts of Lieberkuhn	$(iii)$ Glisson's capsule
$(D)$ Sphincter of Oddi	$(iv)$ Gall bladder
	$(v)$ Hepato-pancreatic duct