The Endocrine System Mr. Fox Science Class. Endocrine System A series of different glands that...
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![Page 1: The Endocrine System Mr. Fox Science Class. Endocrine System A series of different glands that produce hormones that control many of the body’s daily.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697bfc91a28abf838ca8ac3/html5/thumbnails/1.jpg)
The Endocrine System
Mr. Fox Science Class
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Endocrine System
• A series of different glands that produce hormones that control many of the body’s daily activities and long term development.
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Hormone
• A chemical that can turn on, turn off, speed up, or slow down activities of different organs and tissues.
• While a nerve response is a fast one, it’s very short lived. A hormone response is slower to start, but are longer lived.
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![Page 5: The Endocrine System Mr. Fox Science Class. Endocrine System A series of different glands that produce hormones that control many of the body’s daily.](https://reader035.fdocuments.us/reader035/viewer/2022070415/5697bfc91a28abf838ca8ac3/html5/thumbnails/5.jpg)
The Important Glands
• Look them up in your book. Tell me where, what they produce, how they affect the body, and when they affect the body.
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• Hypothalamus • Pituitary (master gland)• Adrenal• Thyroid• Thymus• Ovaries• Testes• Pancreas
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Hypothalamus
• Produces hormones that control the pituitary gland.
• Control nerve messages when you need to sleep, when you are hungry and other conditions.
• Helps maintains homeostasis
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Pituitary
• Communicates with the Hypothalamus
• Switches on other endocrine glands
• HGH is produced here• Stimulates the thyroid• Controls water in the blood
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Thyroid
• Releases hormones that control metabolism.
• Found just under your larynx• Parathyroid glands – regulate
calcium in the blood.
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Adrenal Gland
• Produces Adrenaline!• On top of the kidneys like little
hats! • Helps balance water and salt in the
blood. Helps control sugar• Adrenaline triggers the body o
respond to emergency situations.
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Thymus
• Middle of the chest, near the heart. • Hormones stimulate the immune
system. • Causes the Immune response to
fight infection
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Pancreas
• While part of the digestive system, is also an endocrine gland.
• Produces Insulin and glucagon• Controls the amount of sugar
found in the blood.
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Ovaries
• Only found in females. • Release the female sex hormone
estrogen. • Controls the development of the
secondary sex characteristics. • Progesterone and estrogen
together trigger the development of eggs.
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Testes
• Found in males only.• Releases the male sex hormone
testosterone. • Controls the development of the
secondary sex characteristics.• It also triggers the production of
sperm.
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Feedback Systems
• Negative Feedback System – a system that is turned off by the condition it causes.
• Positive Feedback System – a system that is induced more by the condition it causes.