The+Endocrine+System

**29.6 ENDOCRINE SYSTEM**

Endocrine system consists of different separated organs called **glands** (Nowicki 896) (Susan).

**Hormones** are chemical signal released by glands into the bloodstreams (Nowicki 896) (Susan).  **-**Hormones move to different body systems through bloodstream (Nowicki 896) (Susan).  -When they meet cells with matching-shape receptors, they bind to those cells. As they bind, changes were made to maintain homeostasis (Nowicki 896) (Susan). -Hormones can only be able to interact with a cell if it is able to fit perfectly to the cell's receptor (Nowicki 896) (Susan).

**Hypothalamus** is a gland that is part of both the Nervous system and Endocrine system (Nowicki 898) (Susan).  -Located in the brain (Nowicki 898) (Susan). .



-Processes, and sorts through information that it get from sensor [Nervous System] (Nowicki 898) (Susan).  -Sends chemical signals to other glands to release more hormones (Endocrine System) (Nowicki 899) (Susan).  +**Releasing Hormones** are hormones that trigger other glands to do a specific thing (Nowicki 900) (Susan).



**Pituitary** is a gland located right next to the Hypothalamus (Nowicki 898) (Susan).  -Is affected by most of Hypothalamus’s hormones (Nowicki 898) (Susan).

Other glands in a human body: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Thyroid: +Located on neck [also known as the “Adam apple”] (“Endocrine System…”) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%; margin-left: 84pt;">+ With Growth hormone-releasing hormone, and Gonadotropin <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">releasing hormone. (Nowicki 899) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Thymus: +Located behind breast bones (“Endocrine System…”) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%; margin-left: 1in;"> +With hormone called Thymosin (Nowicki 899) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Adrenal glands: +With hormones called Epinephrine (Nowicki 899) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Pancrease: + With 2 hormones named Insulin and Glucagon (Nowicki 899) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Female gonads (Ovaries): +Located next to Uterus in female reproductive system (“Endocrine System…”) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%; margin-left: 174pt; text-indent: -30pt;"> +Produces Estrogen and Progesterone- hormones that <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">help a female to become more mature sexually (“Endocrine System…”) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;"> -Male Gonads (Testes): + Located in male reproductive system (“Endocrine System…”) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%; margin-left: 156pt;">+ Produces Testosterone- hormones that help a male to <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">become more mature sexually (“Endocrine System…”) (Susan).



<span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">Overproduction of releasing-hormones: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">-When releasing-hormones are still being produced even after the body had reached its ideal condition (Nowicki 901) (Susan) <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">-Can leads to serious illnesses including diabetes (Nowicki 901) (Susan) <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">-Disturbs Homeostasis (Nowicki 901) (Susan)

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">Feedback loops and Homeostasis: <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">- 2 kinds: Negative Feedback Loops and Positive Feedback Loops (Nowicki 860-61) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">-Negative Feedback loops narrow body conditions down into an ideal range [maintenance of Homeostasis] (Nowicki 860) (Susan). <span style="font-family: Arial,Helvetica,sans-serif; font-size: 110%;">-Positive Feedback loops change the body's ideal range of condition to adapt to a typical situation. As the situation reaches a certain level, it goes back to Negative Feedback loops which maintain Homeostasis (Nowicki 861) (Susan).


 * **WORKS CITED**

Nowicki, Stephen. "The Endocrine System and Hormones." //McDougal Littell Biology//. Evanston, IL: McDougal Littell, 2008. 896-901. Print. "Endocrine System - Endocrine System." //InnerBody.com | Human Body, Anatomy Charts, Anatomical Models//. HowToMedia, Inc. Web. 15 May 2011. <span style="font-family: Arial,Helvetica,sans-serif;">Nowicki, Stephen. "Mechanisms of Homeostasis." //McDougal Littell Biology//. Evanston, IL: <span style="font-family: Arial,Helvetica,sans-serif; line-height: 21px;">McDougal Littell, 2008. 858-61. Print.
 * Information**:

//Receptors//. Digital image. //Hudson////'s FTM Resource Guide//. Hudson's FTM Resource Guide. Web. 15 May 2011. //Endocrine Systematlas//. Digital image. //American Medical Association//. American Medical Association. Web. 15 May 2011. Sheth, Kevin. //Hypothalamus//. Digital image. //Medline Plus//. National Institutes of Health. Web. 15 May 2011.
 * Images:**

[|(Susan) How Endocrine System Work] [|(Susan) Endocrine System Diagram]
 * **LINKS**