The+endocrine+and+musculoskeletal+systems


 * [[file:The endocrine for posting 2018.ppt]] ||
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....Scientific glossary. Endocrine system

Endocrine System worksheet I ||  || || [|cartilage From Bitesize]
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|| The endocrine system is a set of hormone secreting glands within the body of an animal. The function of the endocrine system is __**homeostasis,**__ communication and response to stimuli. **The endocrine system regulates the internal environment of the animal for growth, survival and reproduction as well as allowing it to respond to changes in its external environment.** The endocrine system’s glands secrete chemical messages we call [|hormones]. These signals are passed through the blood to arrive at a **target organ**, which has cells possessing the appropriate **receptor**. **Exocrine glands** (not part of the endocrine system) secrete products that are passed outside the body. Sweat glands, salivary glands, and digestive glands are examples of exocrine glands.

The adrenal glands are located on top of each kidney. They secrete the hormone called **adrenaline** (also called **epinephrine**). This hormone prepares the body for stress and is released when we are frightened or feel stress. It does the following: 1. Increases blood flow to the heart, muscles, and brain. 2. Reduces blood flow to the kidneys. This helps reduce blood loss if we are cut. It causes us to get pale. 3. Opens the bronchioles allowing us to get more air. 4. Increases glucose levels in the blood. 5. Increases heartbeat rate. 6. Increase muscular contraction and strength. 7. Increases mental alertness. ||

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