(a) Draw a diagram of human alimentary canal and label the following parts: (i) largest gland. (ii) gland that secretes digestive enzymes and hormone. (iii) Part where HCl is produced. (iv) part where digested food is absorbed. (b) What are villi? Explain their function in the digestive system.
(a) Draw a diagram of human alimentary canal and label the following parts: (i) largest gland. (ii) gland that secretes digestive enzymes and hormone. (iii) Part where HCl is produced. (iv) part where digested food is absorbed. (b) What are villi? Explain their function in the digestive system.