CONCEPT MAPPING Use the following terms to create a concept map that shows the ovarian and menstrual cycles: corpus luteum, estrogen, follicle, hormones, follicular phase, menstrual cycle, luteal phase, ovarian cycle, ovulation, ovum, progesterone, and uterus.

Critical Thinking

Predicting Results What do you think might happen if more than one sperm were able to penetrate the cell membrane of an egg?

Evaluating Differences A human female produces, on average, only one mature egg every 28 days. In contrast, a female salmon lays 50 million eggs at each spawning. Hypothesize why there is such a great difference in egg production between the two species.

Recognizing Relationships Women who consume tobacco, alcoholic beverages, or other drugs or harmful substances during pregnancy are at high risk of giving birth to infants who are addicted to drugs, have severe birth defects, or tend to develop learning disabilities. Explain.

Interpreting Graphics What is the fetus doing in the photograph below? Suggest an adaptive advantage for this activity.

Urethra And Vas Deferens Difference

Standardized Test Preparation

DIRECTIONS: Choose the letter of the answer choice that best answers the question.

1. Which of the following is the correct pathway for sperm as it exits the body?

A. the testes to the penis to the epididymis

B. the urethra to the vas deferens to the testes

C. the epididymis to the vas deferens to the urethra

D. the testes to the vas deferens to the epididymis

2. Which of the following is true about follicle-stimulating hormone?

F. It is secreted by the follicle.

G. It is secreted by the pituitary gland.

H. It promotes contractions of the uterus.

J. It stimulates the development of the placenta.

3. Which of the following help form the placenta and umbilical cord?

A. the amnion and chorion

B. the amnion and yolk sac

C. the chorion and yolk sac

D. the chorion and allantois

4. By the end of the first trimester, which of the following has occurred in the fetus?

F. The fetus has a full head of hair.

G. The fetus uses its lungs to breathe.

H. The brain of the fetus is fully developed.

J. All of the organs of the fetus have begun to form.

INTERPRETING GRAPHICS: Study the image of the sperm cell below to answer the questions that follow.

Where are the enzymes that help the sperm penetrate the ovum found?

A. in the head

B. in the nucleus

C. in the midpiece

D. in the flagellum

6. Where are the mitochondria that supply the energy that sperm need for movement found?

F. in the head

G. in the nucleus

H. in the midpiece J. in the flagellum

DIRECTIONS: Complete the following analogy.

A. sperm

B. urethra

C. fallopian tube

D. prostate gland

INTERPRETING GRAPHICS: The image below shows an ovary. Use the image to answer the question that follows.

8. What event is illustrated by this figure?

F. ovulation

G. ejaculation

H. fertilization

J. menstruation

Pregnancy And Childbirth

Pregnancy And Childbirth

If Pregnancy Is Something That Frightens You, It's Time To Convert Your Fear Into Joy. Ready To Give Birth To A Child? Is The New Status Hitting Your State Of Mind? Are You Still Scared To Undergo All The Pain That Your Best Friend Underwent Just A Few Days Back? Not Convinced With The Answers Given By The Experts?

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