Obstetrics and Gynecology

Obstetrics and Gynecology

obstetrics and gynecology related to the female reproductive system, we are studying in

Gynecology -study of female reproductive system and related disorder

Obstetrics- study of pregnancy and pregnancy-related disorder

Andrology- study of male reproductive system

Obstetrics and Gynecology
Obstetrics and Gynecology

Difference between gynaecology and andrology


Gynaecology or female reproductive system Andrology for male reproductive system

Oestrogen female organs

By overy




Ovem formation called as Oogenesis

*Ovem (23 pairs chromosome)


* ovum is female gamete

* size of ovum 130 micron

* ovum is largest cell of human body

* females smallest cell is platelet

* lifespan of ovum 12-24 hours

* formation of ovum in 6-8 days

* puberty mean start maturation cycle

Testosterone male hormone

By Leydig cell



Sperm formation is spermatogenesis

*23 pairs chromosome

*haploid chromosome

*sperm is male gamete

*size of scrum is 50 Micron

*Smallest cell of human body sperm

* largest cell of male neurone

* lifespan of sperm 48-72 hours

* formation of sperm in 61 days

* male puberty means testis development




46 chromosome

44 + XX female

44 + XY  male

44 is autosome

XX and XY is sex chromosome

Father                                                        mother

44 + XY                                                        44 + XX

Sperm                                                             ovem

23 pairs                                                        23 pairs

22 + X                                                           22 + X

22 + Y                                                           22 + Y

The baby boy will or the girl is dependent on this chromosome Y.

  • While the girl has XX
  • The boy has XY

”So it was proven that the infant’s sex is determined by male sperm.

But in today’s rough society, the woman is blamed for the birth of a girl”


The fusion of sperm and ovum is called

ovem + sperm= fertilization.>

diploid in fallopian tube

  • 1st step Zygot/ fertilized egg (0-2 week product)
  • 2nd step Embryo (2-8 week)
  • 3rd step Fetus (8-40 week)

Ideal Delivery time

  • Gestational age 280 days
  • 40 week
  •  9 month + 10 days

Female Reproductive System Definition

the female reproductive system is made up of the internal and external sex organs, It produces the female egg cells necessary for reproduction, system include the uterus, ovaries, fallopian tubes, cervix, and vagina.

female reproductive system anatomy