This document summarizes the key biological differences between male and female reproductive systems. It notes that boys have internal organs like the penis and testicles that produce sperm, while girls have a vagina, ovaries, and uterus. During puberty, girls develop breasts and wider hips and boys develop facial hair, muscles and a deeper voice. The document also outlines the processes of fertilization, pregnancy, and birth.

1. BY JESÚS

3.  Boys have a penis, urethra, vas deferens,
prostate, seminal vesicles and testicles.
 Girls have a vagina, ovaries, fallopian tubes
and a uterus.

4.  Girls develop bigger breasts, rounder hips
and hair under their arms and in
the pubic area.
Boys develop a deeper voice, wider shoulders,
bigger muscles and facial and body hair.

5.  Reproductive cells:

6.  It produces female gametes called egg cells.
The fertilised egg cell develops into a fetus.

7.  It produces male gametes called sperm cells.
The sperm cells travel into the woman’s
reproductive system.

8.  Fertilisation is when the sperm penetrates the
egg cell to produce a zygote. During sexual
intercourse sperm cells swim into the uterus
and up the fallopian tubes to the egg cell.

9.  The time between the fertilization of the egg
cell and the birth of the baby.

10.  The baby leaves the uterus through the
vagina.