Reproductive system of man this presentation contains the content of reproductive system of male and female with picture description and sexually transmitted diseases. prepared by - S.lavesan and s.subangan, the students of Jaffna National college of education.

1. Prepared by- S.Lavesan and S.Subangan
Jaffna national college of education – Sri Lanka

2.  Puberty
 Secondary sexual characteristics
 Male reproductive system
 Female reproductive system
 Menstrual cycle
› Changes that take place in the ovary
› Changes that take place in the Uterus
 Sexually transmitted diseases

3.  What is puberty?
 Sexual maturity or attaining adolesence is
referred to as puberty.

4.  Pubertal hair grown on face , chest, under
arm pits and in genital areas.
 Shoulders grow wide
 Larynx enlarges and voice become deep
 Bones and muscles grow fast and the
growth of body is accelerated
 testes start to produce sperms
 Genitals start to grow larger
In males

5.  Pubertal hair grown on arm pits and in genital
areas.
 Pubic region widens
 Mammary glands start to grow
 Fat deposits in the hypodermis and body
becomes fat
 Bones and muscles grow fast and the growth
of body is accelerated
 Releasing of ova ovaries (menstrual cycle)
starts

8.  Production of sperm cells
 Ejection of sperm into female reproductive
system
 Production of testosterone

12.  Developing ova which are the female
reproductive cells
 Facilitate the developing the foetus
 Production of hormones estrogen and
progesterone

13. Cross section of an ovary with various stage of ovum

14.  What is menstrual cycle?
› The cyclic process associated with the
reproductive system of sexually matured females
as known as menstrual cycle.
› It takes place associated with two locations
 Changes that take place in the ovary
 Changes that take place in the uterus
 It takes approximately 28 days for one
menstrual cycle

15. Changes that take place in the ovary
 Changes that occur in the ovary can be
divided into two stages
› Follicular stage
› Luteal phase

16. Follicular stage
 Initial phase
 Influencing hormone – FSH
 Takes about 14 days
 During this phase, ovary secrets oestrogen

17.  Final phase
 Ovum releasing from the ovary
 Fertilization doesn’t occur
 Ovum passing through fallopian tube
 The remaining part of graafian follicle changes
to form corpus luteum and finally to corpus
albicans and fades off
 Takes about 14 days
 During this phase ovary secrets progestrone

19.  What will happen if an ovum is fertilized?
› The embryo develops in the uretus
 What will happen if an ovum is not fertilized?
 We can divide the changes into 3 phases
› Menstrual phase
› Proliferation phase
› Secretory phase

20. Menstrual phase- 4days
 Initial phase
 Fertilization does not take place
 Progesterone decreases- cause the
degradation of the wall of uterus
 What is menstrual flow?

21.  Second phase
 Oestrogen increases
 Progestrone decreases
 Re-build of uterus wall by the influence of
oestrogen
› New cell layer
› Blood capillaries
proliferation phase- 10days

22.  Final phase
 Uterine wall getting thickness
 Blood supply increases
 Progestrone increase
 Influence of progestrone- Activation of
glands on the uterine wall to secret
 Body temperature increase
Secretory phase- 14days

24.  What is fertilization?
 During the copulation
› Seminal fluid (semen) is released into the
vagina
› Sperm cells swimming in the fluid, pass
through uterus towards the upper part of
fallopian tube
› One of the sperms fuses with the ovum
› Ovum and the sperm fuses together

25.  Fertilized ovum is referred to as zygote
 Rolling towards the uterus
› Cell Division to increase the number of cells
 It become as Morula
› It disintegrates the tissues of uterine wall,sinks
and deposits in the wall

26.  Foetal development – in 6weeks
 Embryonic membranes development
 What is placenta?
› The place that the embryonic membranes
connect with uterine wall
 Umbilical cord – material exchange from
mother to foetus and foetus to mother

28.  Gonorrhoea
› Tramitted by a baceteriam Neisseria gonorrhoeae
› Blindness and lameness
 Syphilis
› A bacterium Treponema pallidum
› Fever and pain in throat
 Herpes
› A virus Herpes simplex
› Highly painful blisters on sex organs
 AIDS
› Human Immunodeficiency Virus (HIV)
› May be Fatal and cannot be cured