Question

Assertion (A) ) Pancreas is a composite gland.
Reason (R) It acts both as an exocrine and an endocrine gland.

• A. If both A and R are true and R is the correct explanation of A
• B. If both A and R are true, but R is not the correct explanation of A
• C. If A is true, but R is false
• D. If A is false, but R is true

Answer 1

Answer: (A)

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Pancreas is a composite gland because it acts both as an exocrine gland and an endocrine gland. The endocrine pancreas consists of islets of Langerhans, which have two main types of cells called a-cells and |3-cells. The a-cells secrete a hormone called glucagon, while the |3-cells secrete insulin.
The exocrine part of the pancreas consists of rounded lobules (acini) that secrete an alkaline pancreatic juice with $pH8.4$. The pancreatic juices help in the digestion of starch, proteins, fats and nucleic acids.