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Overview of the Endocrine System

Overview of the Endocrine System

TEM of growth hormone producing cell from the pituitary gland. Growth hormone granules are shown in green.
© University of Edinburgh, Wellcome Images.

The endocrine system is comprised of ductless glands that produce messengers, called hormones, which regulate reproduction, development, metabolism and behavior. It interacts with the nervous system to control the activities of other organ systems.




Author(s): Center for Educational Outreach, Baylor College of Medicine.
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Overview of the Endocrine System

Major Components of the System

Pituitary Gland

Pineal Gland

Thyroid Glands

Parathyroid Glands


Adrenal Glands


Functions of the System

Functions of the System