7th Grade Science Student ebook

CHAPTER 16 HUMAN BODY SYSTEMS

Section 16.2

4. The graph below shows the hormone levels in a woman’s
   blood during her menstrual cycle. Examine the graph and
   then answer the questions below.

a. Which hormone controls the thickening of the uterine

lining?

b. Which hormone controls ovulation?

c. What happens when the levels of both hormones

decline?

Section 16.3

5. Make a line graph that shows the levels of insulin and
   glucose in your blood before and after eating a candy bar.
   Plot time on the x-axis and insulin/glucose level on the y-
   axis. You do not need to worry about the numerical values of
   the variables. Just estimate what the curve of each line
   would look like.

Chapter Project

Placental Health

It is important for a pregnant woman to maintain a healthy

lifestyle, since oxygen and nutrients pass from her blood to the

fetus through the placenta and umbilical cord. For this project

you will create a tri-fold brochure that teaches the importance of

the placenta and umbilical cord. Make a brochure that could be

displayed in the waiting room of a doctor's office. Make your

brochure creative and informative so people will want to read it.

You need to list four sources of information on the very back of

your brochure. Only two of the sources can be websites. Things

to include in your brochure:

1. Labeled sketch that shows fetus, placenta, and umbilical
   cord in the uterus.


2. List of behaviors or choices that result in harmful
   substances reaching the fetus through the placenta.


3. List of diseases that can be transferred from the mother to
   the fetus through the placenta.


4. "Do's and Don'ts" to maintain a healthy pregnancy.


5. Places to go for more information (4 sources; only 2
   websites).

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Days

Hormone levels

Hormone Level vs. Time

Ovulation

Progesterone

Estrogen

Menstruation

Thickness of the uterine lining