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1. What does the endocrine system consist of?:
Answer Glands that secrete hormones
2. How doesthe endocrine system maintain homeostasis?:
Answer By using hormonesas chemical messengers which are secreted in response to
changes in internal environment
3. How are hormones classified?:
Answer By structure (steroid vs. nonsteroid), source,and primary effects
4. Steroids:
Answer Lipids that enter the cell nucleus to initiate transcription directly
5. Peptide (nonsteroid):
Answer Needs a secondary messenger system to activate transcription in the nucleus
6. What is the endocrine system controlled by?:
Answer A negative feedback systemwhere the endocrine and nervous systems work
together to regulate metabolic activities
7. What causes excess hormone levels?:
Answer Tumors (usually benign) produce highlevels
8. What are the results of excretion impairment by the liver or kidneys?:
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