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ENDO: Overview 1

Endocrine system overview.

QuestionAnswer
Hormones Chemical messengers, mostly those manufactured by the endocrine glands and secreted directly into blood stream. Produced in one tissue and affect another.
Homeostasis A tendency to maintain a balanced or constant internal state.
pituitary gland The endocrine system's "master" gland. Under the influence of the hypothalamus, this gland controls other endocrine glands.
neurohormones produced and released by neurons in the brain, rather than by the endocrine glands, and delivered to organs and tissues through the bloodstream
endocrine glands Ductless glands that release hormones into the bloodstream
exocrine glands secrete chemical substances into ducts that lead either to other organs or out of the body
hypothalamus A neural structure lying below the thalamus; it directs several maintenance activities (eating, drinking, body temperature), helps govern the endocrine system via the pituitary gland, and is linked to emotion and reward.
negative feedback A primary mechanism of homeostasis, whereby a change in a physiological variable that is being monitored triggers a response that counteracts the initial fluctuation.
thyroid gland endocrine gland that surrounds the trachea in the neck
parathyroid gland four small glands on the posterior of the thyroid gland (neck)
testes male gonads
ovaries female gonads
Created by: jfoote
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