Question

Which organ functions both as an endocrine and exocrine organ?

Answer 1

i) The exocrine glands are the glands that secrete their secretion in the channel or duct. They mostly secrete enzymes.
ii) The endocrine glands are the glands that secrete their secretion directly into the blood. They are known as ductless glands. The secretion is known as the hormones which are target specific and acts on the particular target organ.

Complete answer:
The pancreas is an important organ in our body that functions as both endocrine and exocrine. Your pancreas is also important in digestion. It is situated just below your stomach within your belly. It is roughly the size of your palm. The pancreas is an exocrine gland as well as an endocrine gland.

Exocrine- The pancreas is considered exocrine as it releases pancreatic juice into the small intestine through the pancreatic duct. The pancreatic enzymes are exocrine in the intestine. It secretes enzymes which is a mixture of lipase, protease and amylase for the breakdown of starch, fats and proteins.

The pancreas is a massive organ in the abdomen that is also an endocrine organ. The endocrine components of the pancreas are Langerhans islets that specifically generate insulin and glucagon hormones directly into the blood. The insulin reduces the blood sugar whereas glucagon increases the sugar level in the blood.

So, the pancreas is considered both an exocrine and endocrine organ.

Note:
- Heterocrine glands are those that have both exocrine and endocrine functions.
- The pancreas is referred to as a heterocrine gland because it secretes insulin into the blood, which is an endocrine feature, and enzymes into the digestive tract, which is an exocrine function.
- The other important endocrine glands in our body are the pituitary, thyroid, adrenal glands etc.