Title: 013368718X_CH34_529-544.indd
Author: G4_Dual142_1
Last saved by: Tamara Pennington
Company: Lapizdigitalservices

Name 	   Class 	    Date 	

34.1 The Endocrine System
For Questions 1–4, write True if the statement is true and False if the statement is false.
	  1.  Hormones are chemical messengers that are transported by the bloodstream.
	  2.  Any cell can be a target cell for a hormone.
	  3.  The body’s response to hormones is the same as it is for nerve impulses.
	  4.  Insulin and glucagon are two opposing hormones.

5. Fill in the chart below:

Gland | Hormone(s) Produced | Function
Parathyroid | Parathyroid hormone |
Pineal | | Regulates rhythmic activities
| Thyroxine |
| Corticosteroids, epinephrine, norepinephrine |
| | Maintains the level of glucose in the blood
| | Regulates formation of eggs and development of secondary female sex characteristics; prepares uterus for fertilization
| Testosterone |

6. What are prostaglandins? How is their action different from that of hormones?

	

Hormone Action

THINK VISUALLY

7. 	Steroid and nonsteroid hormones affect their target cells in different ways. In the spaces below, draw diagrams that show how each type of hormone affects its target cells. Be sure to label the cell membrane, cytoplasm, nucleus, the hormones, and their receptors.

How Steroid Hormones Work | How Nonsteroid Hormones Work

8. Summarize the action of a steroid hormone on a target cell.

	
	
9. Summarize the action of a nonsteroid hormone on a target cell.