Science Notebook - Student Edition

Digestive and Endocrine Systems 363

Action of

Hormones

I found this information

on page.

Negative

Feedback

I found this information

on page.

Endocrine

Glands and Their

Hormones

I found this information

on page.

Section 35.3 The Endocrine System (continued)

Main Idea Details

Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

Contrast the action of steroid hormones and amino acid hormones.

Steroid Hormones Amino Acid Hormones

Sequence the steps in a portion of the negative feedback system.

Steps in the regulation of calcium are written in scrambled order at

right. Write the steps in the correct order in the boxes.

Kidneys excrete less

calcium.

Parathyroid glands detect

calcium deficiency.

Bones release more

calcium.

Blood calcium drops too

low.

Parathyroid glands

release more parathyroid

hormone.

Serves as messengers

Produces messengers

Receives the messages

Explain how the endocrine system functions as a communication

system.