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Endocrine System Definition and Explanation PDF | Download eBooks

Learn Endocrine System definition in college biology with explanation to study “What is Endocrine System”. Study endocrine system explanation with college biology terms to review biology course for online degree programs.

Endocrine System Definitions:

  1. Chemicals are called hormones. Hormones are made in special glands called endocrine glands.

    Cambridge IGSCE Biology by Mary Jones, Geoff Jones

  2. Pituitary glands is located at the base of the brain and is attached to the hypothalamus by the infundibulum.

    College Biology by Textbook Equity

Endocrine System Explanation:

Animals convey messages and information from one part of the body to another by utilizing chemicals known as hormones, made particular gland, named as ; endocrine glands. Endocrine glands releases hormones directly into the body, while, salivary glands do not secrete hormones into the blood i.e. saliva is released into the salivary duct and brings it to the mouth. Moreover, the two adrenal glands, above each kidney, involved in making hormone called adrenaline. These glands usually released hormone, when we are frightened, happy or excited.

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