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ShareA gland is an organ in an animal's body that synthesizes a substance for release such as hormones, often into the bloodstream (endocrine gland) or into cavities inside the body or its outer surface (exocrine gland).
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Every gland is formed by an ingrowth from an epithelial surface.
This ingrowth may from the beginning possess a tubular structure, but in other instances glands may start as a solid column of cells which subsequently becomes tubulated.
For more information about the topic Gland, read the full article at Wikipedia.org, or see the following related articles:
Exocrine gland — Exocrine glands are glands that secrete their products into ducts. They are the counterparts to endocrine glands, which secrete their products ... > read more
Salivary gland — The salivary glands produce saliva, which keeps the mouth and other parts of the digestive system moist. It also helps break down carbohydrates (with ... > read more
Endocrine system — The endocrine system is a control system of ductless glands that secrete chemical messengers called hormones that circulate within the body via the ... > read more
Hair follicle — A hair follicle is part of the skin that grows hair by packing old cells together. Attached to the follicle is a sebaceous gland, a tiny ... > read more
Pituitary gland — The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in the small, bony cavity at the base of the brain. The ... > read more
Mammary gland — Mammary glands are the organs that, in the female mammal, produce milk for the sustenance of the young. These exocrine glands are enlarged and ... > read moreEditor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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