Content Outline for Teaching - Potosi School District - Home

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Section 2
Content Outline
for Teaching
Human Reproduction
The Human Body
Underlined words and
phrases are to be filled
in by students on the
Note-taking Worksheet.
A. The male reproductive system has both internal and external organs.
1. The testes produce the male hormone testosterone and sperm, the male reproductive
cells.
2. Fluid from the seminal vesicles mixes with sperm to form semen.
3. Semen leaves the body through the urethra.
B. The organs of the female reproductive system are internal.
1. Ovaries are the female sex organs that produce eggs and the hormone estrogen.
2. An egg is released from an ovary roughly every 28 days—a process called
ovulation.
3. The monthly cycle of changes in the sexually mature female reproductive system
is the menstrual cycle.
4. The menstrual cycle has three phases. Ovulation occurs at the end of phase two.
C. Human development goes through many stages.
1. Development begins with fertilization —the joining of a sperm and egg.
2. Development from fertilization to birth is called pregnancy. During pregnancy
the zygote becomes an embryo, then a fetus.
D. The stages of development after birth are infancy, childhood, adolescence, and
adulthood.
1. During infancy the nervous and muscular systems develop rapidly and the
infant interacts with the world.
2. During childhood growth is rapid and the child learns many new skills.
3. Adolescence includes puberty and a final growth spurt.
4. During adulthood the muscular and skeletal systems stop growing.
Discussion Question
Unlike all other body systems, the reproductive system is not essential for an individual
to live. Why is it still very important? Without the reproductive system there would be no
new humans and the species would become extinct.
The Human Body 65