HLSC 2463U Study Guide - Final Guide: Adenylyl Cyclase, Alpha Cell, Autocrine Signalling

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4 May 2018

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Altered Physiology II

Chapter 18- Mechanisms of Hormonal Regulations

Study Guide

Describe the differences

1. What is the difference between a direct effect and a permissive effect of a hormone?

2. What is the difference between autocrine and paracrine action of a hormone?

3. What is the difference between negative and positive feedback?

Complete the Sentences

Write one word in each blank to complete these sentences.

1. Steroid hormones are synthesized from………………

2. ADH also is called arginine………………..

3. In order for a hormone to act on a cell, the cell must have ………………. For that

hormone.

4. Hormones that bind to receptors that activate adenylyl cyclase use……………….. as a

second messenger.

5. Releasing hormones are produced by the ………….

6. An individual who has an iodine-deficient diet will have difficulty making enough

………………. Hormones.

7. In the islets of Langerhans, alpha cells produce…………… and beta cells produce insulin

and ……………

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