The Endocrine System Lesson Outline LESSON 3 A.

Name
Date
Class
Chapter 18
Lesson Outline
LESSON 3
The Endocrine System
A. Functions of the Endocrine System
1. The
consists of groups of organs and tissues that release
chemical messages into the bloodstream.
2. Endocrine tissues that secrete chemical messages are
3. A(n)
.
is a chemical message produced by an endocrine
gland. The
organism.
carries these messages to other parts of the
4. The messages sent by the endocrine system are transmitted less rapidly than
messages sent by the
system.
B. Endocrine Glands and Their Hormones
1. Hormones affect the
of organs and tissues. A hormone
message is produced for a specific
cell.
2. After a hormone finds the target cell, it
to a receptor
protein in the cell and delivers its chemical message. The target cell
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
with the appropriate action.
3. Hormones secreted by the
regulate body functions,
control other endocrine glands, and cause growth.
4. The
controls how the body uses energy.
5. The two
release hormones that enable the body to
respond to stress and react quickly.
6. The
receives information from the nervous system and
controls the activity of the pituitary gland.
7. The four
8. The
regulate the release of calcium into the blood.
signals the immune system to produce cells to
fight infections.
9. The
secretes insulin and glucagon, which regulate the
level of sugars in the blood.
10. The two
in males are responsible for releasing
testosterone and producing sperm cells for reproduction.
11. The two
in females are responsible for releasing
estrogen and producing egg cells for reproduction.
Control and Coordination
49
Name
Date
Class
C18L3
Lesson Outline continued
C. The Endocrine System and Homeostasis
1. Glands help maintain
by releasing hormones, which
change the function of tissues and organs.
2.
is a control system where the effect of a hormone
inhibits further release of the hormone. The endocrine system uses negative
feedback and controls the amount of hormone that a(n)
releases.
3.
is a control system in which the effect of a hormone
causes more of the hormone to be released.
4. Whereas negative feedback helps maintain
, positive
feedback does not.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
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Control and Coordination