Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
hormone |
In multicellular organism, one of many types of circulating chemical signals that are formed in specialized cells, travel on body fluids, and act on specific target cells to change their functioning |
|
|
endocrine system |
The internal system of chemical communication involving hormones, the ductless glands that secret hormones, and the molecular receptors on or target cells that respond to hormones functions in concert with the the nervous system to effect internal regulation and maintain homeostasis |
|
|
endocrine glands |
A ductless gland that secrets hormones directly into the interstitual fluid, from which they diffuse into the bloodstream |
|
|
nuerosecretory cells |
A specialized nerve cell that releases a hormone into the bloodstream in response to signals from other nerve cells; located in the hypothalamus and adrenal medulla |
|
|
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 |
