Glands

A gland is a group of cells or an organ in the body that synthesizes substances (such as hormones) for release into the bloodstream, cavities, or onto the body surface. There are two main types of glands: exocrine glands and endocrine glands.

Exocrine Glands

Exocrine glands secrete their products into ducts, which then carry the secretions to the body's surface or into body cavities. Examples of exocrine glands include sweat glands, salivary glands, and mammary glands.

Endocrine Glands

Endocrine glands secrete hormones directly into the bloodstream. These hormones then travel to target tissues or organs where they regulate various physiological processes. Examples of endocrine glands include the pituitary gland, thyroid gland, and adrenal glands.

Study Guide

1. What is a gland?
2. What are the two main types of glands?
3. Give an example of an exocrine gland.
4. Give an example of an endocrine gland.
5. How do exocrine glands release their products?
6. How do endocrine glands release their products?
7. What is the function of hormones released by endocrine glands?

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