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  What are the three functions of skin? Describe the three layers of the skin How do sweat glands help your body maintain a stable internal environment? List the organs of the excretory system

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1. What are the three functions of skin?
2. Describe the three layers of the skin
3. How do sweat glands help your body maintain a stable internal environment?
4. List the organs of the excretory system.
5. How is the activity of the kidneys regulated?
6. What is the difference between endocrine and exocrine glands?
7. Which gland is called the master gland of the body? Why?
8. What hormone is responsible for preparing your body for emergency situations?
9. What are the two types of gametes?
10. What hormone triggers the production of sperm cells?
11. List the three primary germ layers and the structures into which each develops
12. How can you avoid the problems caused by sexual impurity?
13. Identity the three layers of skin
14. Identity two hormones produced by the islets of langerhans in the pancreas that help regulate blood sugar
15. Identity the hormone produced by the pineal gland that makes you feel sleepy
16. How do nephrons filter molecules of waste from the blood