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Endocrine System Organs and their Functions

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.

Endocrine Gland   It produces and releases chemical products directly into the bloodstream. Blood carries the chemicals throughout the body.  
Hormones   They are a chemical product of the endocrine gland. They speed up or slow down the activities of organs and tissues. They are produced when the brain sends a signal to the endocrine gland.  
Target Cell   It is a cell that recognizes certain hormone chemical structures. Hormones only react with certain ___________.  
Hypothalmus   It is part of the brain near the middle of the head that links the nervous and endocrine systems.  
Pituitary Gland   This gland communicates with the hypothalmus to control the body's activities. The _________ gland releses hormones in response to a signal from the hypothalmus.  
Thyroid Gland   It's hormones release energy from food molecules during respiration. The pituitary gland signals the _________ gland to produce hormones.  
Parathyroid Gland   It releases hormones that regulate the amount of calcium in the blood.  
Adrenal Gland   The ___________ gland produses adrenaline which triggers the body to react to emergency situations. This gland also releases hormones that balance the amount of salt and water in the kidneys and controls the amount of sugar in the blood.  
Thymus   It produces hormones that help the immune system fight infection.  
Pancreas   It produces two hormones (insulin and glucagon) that control the level of the sugar glucose in the blood.  
Ovaries   The _________ release female sex hormones such as estrogen.  
Testes   The __________ release male sex hormones such as testosterone.  
Negative Feedback   It "turns off" the system when a certain amount of a hormone is in the blood.  


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