Question

A heterocrine gland is one which
A. Has two distinct part
B. Serves a double function of exocrine and endocrine gland
C. Produces two types of hormones
D. Occurs in two places.

Answer 1

Hint:Heterocrine glands are those glands that possess both exocrine parts which release chemical substances through ducts as well as endocrine parts which release chemical substances directly into bloodstream or body parts.

Complete answer:
To answer this question, first, we need to know about the heterocrine gland. The pancreas, testis and ovaries have both endocrine and exocrine glands called heterocrine or composite glands. The endocrine portion of the pancreas consists of alpha cells, beta cells, delta cells and F cells. Alpha cells produced glucagon hormone, while the beta cells produced insulin hormone. Delta cells produce somatostatin hormone whereas F cells produce the pancreatic polypeptide. These hormones maintain blood glucose levels.
Heterocrine glands are the glands which act both as exocrine and endocrine glands. Exocrine glands are the glands that produce their products via the ducts while endocrine glands are the ductless glands which produce their products straightly into the blood. For example, in humans, Pancreas is a heterocrine gland.
It secretes insulin hormone into blood and acts as endocrine gland and when it secretes digestive enzymes and juice through pancreatic duct, it acts as exocrine gland.

Thus, the correct option is B. i.e. Serves a double function of exocrine and endocrine gland.

Note: Heterocrine gland pancreas produces insulin and glucagon into bloodstream and releases digestive enzymes through ducts in the digestive tract, in this way heterocrine gland performs both endocrine and exocrine function. Ovary produces steroid hormones into the bloodstream and also carries out exocrine function by producing ova into duct.