Endocrine System Review Guide

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1

Discuss the way in which hormones promote body homeostasis.

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2

Compare and contrast the endocrine system and the nervous system. Make sure you understand the differences between a neurotransmitter and a hormone.

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3

Define negative feedback and describe its role in regulating blood levels of the various hormones. Use an example if you like! J

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4

List AND describe the three types of intercellular communication pathways that enable the body to maintain homeostasis.

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5

Define hormone and target organ

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6

What does the “lock and key system refer to? Explain!

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7

What are the three ways in which hormones are classified?

  1. AMINO ACID DERIVATIVE
  2. Peptide hormones
  3. Lipid derivatives
8

Compare and contrast the functionality of free vs. protein bound hormones in the plasma (bloodstream).

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Free hormones- remain functional for less than an hour

9

Diagram the mechanism of action of a lipid soluble hormone.

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10

Diagram the mechanism of action of a lipid insoluble hormone. Make sure to show the “messenger systems.”

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11

Sketch AND explain the process of amplification in regards to the effects of hormones.

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12

Compare and contrast the processes of down regulation and up regulation. Use an example that was discussed in class to support your response.

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  1. Down regulation- When you have too much of a particular hormone. The receptor is degraded.
    1. Ex: eating all the time constantly releasing insulin, looses receptors. Become type 2.
  2. Upregulation- absence in hormone trigger and increase in number of hormone receptors
13

If you didn’t already do so, diagram the intracellular response of a steroid hormone.

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14

List AND describe the three ways that endocrine reflexes can be triggered.

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15

Compare and contrast simple endocrine reflexes, complex endocrine reflexes, and neuroendocrine reflexes.

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  1. Endocrine reflexes- most cases controlled by negative feedback mechanism
  2. Simple reflex- involeves only one hormone
  3. Complex endocrine reflex- involves one or mor in Time diary step, two or more hormones, ie. The hypothalmus
16

Cont..

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