Science 5

2. Process by which living things produce offspring of their
kind.
People reproduce to survive and to pass traits from one
generation to another.
Each person has a reproductive system that involves
organs responsible for producing offspring.

3. TWO MAIN FUNCTIONS:
1. Produce egg cells; and
2. Nourish the growing baby inside the womb until birth.
It is composed of parts and each parts plays important
functions and role.

4. – primary reproductive organs of females.
- release egg cell or ova during the process of
ovulation.
- also produce and secrete estrogen (hormone
responsible for the development of secondary sex characteristics among
girls such as development of breasts and broadening of hips)
– passageway of egg cells as they travel
from the ovary to the uterus.

5. – also known as womb, where the baby develops.
– narrow muscular end of the uterus.
- it expands during childbirth to allow the babby
to pass through the vagina.
– female sex organ where the semen that contains
the sperm cells is deposited during sexual intercourse.
- where baby comes out during birth.
- also called as birth canal.

7. Main function of producing sperm cells, or male sex cells.

8. – a sac of skin located below the penis and it
contains the testes
– main reproductive organs of male
- produces millions of sperm cells, and also produces
testosterone (hormone responsible for the development of secondary sex
characteristics such as growth of facial hair and formation of pimples)
- sperm cells mix with whitish fluid that is produced
by the prostate gland (serves nourishment for the sperm cells)
- mixture of sperm and fluid are released in the
penis as semen.

9. – tube-like structure that serves as a passageway for
the semen when released during sexual intercourse.
– external male organ that releases semen and urine through a
common passageway called urethra.
– large tip of the penis. It is covered with foreskin.
(In some culture such as in Philippines, the foreskin is cut
through a medical procedure called circumcision. It is done to prevent
the accumulation of large amounts of bacteria from the urine that can
cause infection)

11.  it is a process that transpires when the sperm cell unites with
the egg cell.
It happens when sperm in semen has deposited in the vagina
during the period, and travels to the female’s uterus until they
reach the fallopian tubes when the egg cell awaits. Out of
millions of sperm cells, only one sperm can fertilize an egg.

12. It begins when the head of the sperm binds with the coating
of the egg cell.
As it happens, the egg cell produce protective covering that
prevents other sperm cells from getting through the egg cell.
Female’s body releases progesterone which prepares the
uterus to receive a fertilized egg.
Uterus prepares itself by thickening the lining. This lining is
rich in blood and nutrients needed by the fertilized egg.

13. After one week of fertilization, the fertilized egg embeds itself
in the thickened wall of the uterus in a process called
implantation.
The embedded fertilized egg in the uterus starts to grow into
a fetus or a developing human, and pregnancy is established.

15. 1. Maintain the healthy lifestyle by eating nutritious food,
drinking plenty of water, getting adequate rest, and
engaging in regular exercise.
2. Avoid smoking. Smoking can cause infertility, low sperm
counts, damage ovaries, and abnormalities in reproduction
egg cells.
3. Wash genitals properly and regularly with water and
soap or female or male wash.

16. 4. For females, use clean sanitary napkins during
menstruation. Change the napkins as often as possible.
5. Change underwear at least twice a day. Make sure to
wear clean underwear.
6. Inform your parents for any discomfort or pain that you
may feel in your genitals. For females inform your parents
when you feel severe pain during menstruation, to assist if
it is a need to consult a doctor or not.