Lesson in Developmental Psychology and Biological Psychology

1. Human Reproductive
System
Prepared by:
Orlando A. Pistan, MAEd-GC
Psychology Instructor

2. Female Reproductive
System
Vagina
The vagina receives the penis during sexual intercourse and also
serves as a conduit for menstrual flow from the uterus. During
childbirth, the baby passes through the vagina. The hymen is a
thin membrane of tissue that surrounds and narrows
the vaginal opening.
Cervix
It is the lower most part of the uterus and is made up of strong
muscles. The function of the cervix is to allow flow of menstrual
blood from the uterus into the vagina, and direct the sperms into
the uterus during intercourse. The opening of the cervical canal is
normally very narrow.
Uterus
The uterus, also known as the womb, is the hollow organ in the
female reproductive system that holds a fetus during pregnancy.
Ovaries
The ovaries are located in the pelvis, one on each side of the
uterus. Each ovary is about the size and shape of an almond.
The ovaries produce eggs (ova) and female hormones. During
each monthly menstrual cycle, an egg is released from one ovary.
Fallopian
tubes
The female structures that transport the ova from the ovary to
the uterus each month. In the presence of sperm and fertilization,
the uterine tubes transport the fertilized egg to the uterus for
implantation.

3. Facts:
• Fertilization can occur about 14 days after the beginning of
the menstrual period
• Fertilization is the moment when a single sperm unites
with an ovum waiting in the fallopian tube
• Zygote is formed after the union
• Gestation, or pregnancy duration, is approximately 260
days, or 9 months, divided into 3 periods called trimester.
• Prenatal development is classified into 3 stages: germinal,
embryonic and fetal
• Prenatal period starts from conception and ends at birth

4. Male Reproductive System
Scrotum
Scrotum, in the male reproductive system, a thin external sac of skin
that is divided into two compartments; each compartment contains
one of the two testes, the glands that produce sperm.
Testis
The male gonads — the primary male reproductive organs. They have
two, very important functions that are very important to the male
reproductive system: they produce sperm, and they secrete
hormones, primarily testosterone.
Epididymis
The epididymis is a tightly coiled mass of thin tubes that carries sperm
from the testes to the vas deferens in the male reproductive system.
They maturates the sperm for 10 days to develop motility.
Sperm
duct
During mating, sperm cells that have been released pass through
the sperm ducts.
Prostate
gland
The prostate gland is a male reproductive organ whose
main function is to secrete prostate fluid, the milky components of
semen. The muscles of the prostate gland also help propel this
seminal fluid into the urethra during ejaculation.
Seminal
vesicle
They secrete fluid that partly composes the semen to appear mucoid.
Penis
Penis is the male organ for urination and sexual intercourse. The penis
is an elongated, cylindrical structure made of connective and erectile
tissue that extends outside the body from the base of the pelvis.
Urethra
The urethra travels through the penis and carries semen as well as
urine.

5. Facts:
• Each ejaculation is 3.5 ml. in quantity containing
300 to 500 million sperm cells
• Ejaculation is the action of ejecting semen from
the body
• Below 20 million is considered sterile
• At -196°C, sperm function is stopped
• A sperm cell can live 24 to 48 hours inside the
female body

6. Human Reproductive
System
Thank you for
paying attention.