What is the ductless gland that produces a chemical substance, called a hormone, that is secreted directly into the bloodstream instead of exiting the body through ducts?

1 Answer
Suren Abreu
Jul 10, 2017

An endocrine gland.

Explanation:

There are two types of glands: endocrine and exocrine.

Exocrine glands have ducts that enable them to secret substances directly onto epithelial surfaces. Examples are sweat glands, mammary glands, sebaceous glands, and lacrimal glands, among others.

Endocrine glands are ductless glands that secrete substances (hormones) directly into the bloodstream. Examples are the pineal gland, the pancreas, the ovaries, the testes, and the thyroid, among others.

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