Question

Refer to the given diagram of human digestive system and select the correct option regarding its labelled parts P, Q, R, S and T.

Answer 1

• P is liver which is the largest gland in the body. It secretes bile juice that is stored in a sac called the gall bladder (Q).
• R is the pancreas that secretes the pancreatic juice which acts on carbohydrates, fats and proteins and changes them into simpler forms.
• S is the highly coiled small intestine which is longer in herbivores than in carnivores because herbivores consume plant and grass-based food which is high in cellulose and the digestion of cellulose takes a long time.
• T is the large intestine and its function is to absorb water and some salts from the undigested food material.