August st week CAESAREAN When normal vaginal delivery is not possible due to factors like position of the baby and nature of the placenta, the baby is delivered through a surgical incision in the woman’s abdomen and uterus. It is also termed as abdominal delivery or Caesarean Section or ‘C’ Section. The female reproductive system consists of a pair of ovaries, a pair of oviducts, uterus, cervix, vagina and external genitalia. The male reproductive system consists of a pair of testes, a pair of duct system, accessory glands and external genitalia called penis.
The process of formation of gametes in the male is called spermatogenesis and in the female is called oogenesis. The reproductive cycle in females is called menstrual cycle and it is initiated at puberty. The ovum released during the menstrual cycle is fertilized by the sperm and the zygote is formed. Zygote undergoes repeated mitotic division and the blastocyst is implanted on the walls of the uterus.
It takes about days or weeks for the entire development of the human foetus and it is delivered out through the process of child birth or parturition. The new born baby is breast fed by the mother. XII Std Biology-Zoology Chapter- XII Std Biology-Zoology Chapter- Human Reproduction . Males are said to be sterile when they fail to produce viable sperms.
. Azoospermia refers to the failure of spermatogenesis. . Enlargement of prostate gland is called prostatitis and can lead to difficulty in urination.
. Castration or surgical removal of testis is known as orchidectomy. . Spermarche is the first ejaculation of the semen.