Study the diagram given below and then answer the questions that follow:

(I) Name the cells of the pancreas that produce (a) glucagon (b) insulin.
(ii) State the main function of (a) glucagon (b) insulin.
(iii) Why is the pancreas referred to as an exo- endocrine gland ?
(iv) Why Is insulin not given orally but is injected into the body ?
(vj What is the technical term for the cells of the pancreas that produce endocrine hormones?
(vi) Where in the body is the pancreas located?

Explanation

(1) Alpha cells of islet of Langerhans (2) Beta cells of islet of Langerhans.