Endocrine+System+6b

Endocrine System **
 * [[image:Illu_endocrine_system.jpg width="497" height="667" align="left"]]

= When people are badly frightened their bodies react. These physical reactions, such as sweat and rapid heartbeat are part of the endocrine system. The endocrine system is made up of 9 glands Hypothalamus pituitary, Thyroid, Parathyroid, Adrenal, Thymus, Pancreas also the ovaries and testes that are located in the female and male reproductive system. The “Boss” of all the glands is the pituitary it controls what the other glands do. Nerve impulses travel from the eye to the brain. It senses danger and makes your pituitary gland react. It sends messages to your adrenal glands on the top of your kidneys. The adrenal glands secrete adrenaline. When the adrenal reaches the bloodstream it makes your heart beat fast. The Hypothalamus is the link between nerve impulses and controls your sleep, hunger and other basic body possesses. The ovaries give of estrogen & progesterone. =

** The Hypothalamus ** **The hypothalamus a tiny part of the brain near the middle of your head. It is the link between The nervous system and Endocrine system. Nerve messages controlling sleep, hunger and other basic needs come from the hypothalamus. The hypothalamus also produces hormones that control other endocrine glands and organs. The hypothalamus plays a mayor role in maintaining homeostasis. Homeostasis maintains the body levels under control if you have too much of something in your body the endocrine system will take some out and make your body leveled and healthy.**

** Target Cells **
**A hormone interacts with a specific target cell. Target cells are cells that recognize the chemical structure. A hormone and its target cell fit together into a block. Hormones will travel through the blood stream until they find their “Lock”.** ** Hormones **


 * T** **he nervous system regulates most activities by sending nerve impulses throughout the body. The endocrine system produces chemicals that control many of the daily activities. The endocrine system also regulates long-term changes such as growth and development. The endocrine system is made up of glands. A gland is an organ that produces or releases a chemical. Some glands produce saliva and release their chemicals into tiny tubes.** **

Hormone Production ** **The brain interprets the information ad sends an impulse to the Endocrine glands. That gland in turn, releases the hormone adrenaline into the blood stream. Adrenal immediately makes the heart rate and breathing rate increase. The brain sends signals to an endocrine gland to release adrenal into the bloodstream. When the adrenal reaches he heart it makes the heart beat more rapidly. The heart continues to rise until the amount of adrenaline in the blood stream is back to normal.** MY WEB: (CLICK HERE ) Pituitary ** **The pituitary gland is the main gland and “ The Boss” it also communicates with the Hypothalamus. It tells when your going to have our baby or when your ready to grow. It tells he ovaries to make estrogen. And tells the testes to make testosterone.** = = = Works Cited = = =
 * **"File:Illu Endocrine System.jpg." Wikimedia Commons. Web. 09 June 2010. .**
 * **Fullick, Ann. Body Systems and Health. Chicago, Ill.: Heinemann Library, 2006. Print.**
 * **"How the Body Works Main Page." KidsHealth - the Web's Most Visited Site about Children's Health. Web. 25 May 2010. .**
 * **Padilla, Michael J., Martha Cyr, and Ioannis Miaoulis. Prentice Hall Science Explorer: Human Biology and Health. Needham, Mass.: Pearson Prentice Hall, 2005. Print.**
 * **Way, The. "Endocrine System - Endocrine System." InnerBody.com | Human Body, Anatomy Charts, Anatomical Models. Web. 25 May 2010. .**
 * **http://commons.wikimedia.org/wiki/File:Endocrine_growth_regulation.png**
 * **http://commons.wikimedia.org/wiki/File:Illu_endocrine_system.jpg**
 * **http://commons.wikimedia.org/wiki/File:Thyroide.jpg**
 * **http://commons.wikimedia.org/wiki/File:Labeled_cichlid_forebrain_diagram_with_shh_expression.jpg**