important points - Human Reproduction

important points - Human Reproduction

 

🌟Uterus also called womb.

 

🌟 Longest unstripped muscles of the body are found in the walls of uterus. (During pregnancy)

 

🌟 Clitoris is a homologous to the penis in the male.

 

🌟 Bartholin Glands : It is homologous to Cowper's gland of male

 

🌟 A functional mammary gland is characteristic of all female mammals.

 

🌟 The milk produced during the initial few days of lactation is called colostrum which contains antibodies (IgA) absolutely essential to develop resistance for the new-born babies.

⚡️ Liberation of sperms from Sertoli cells of seminiferous tubules is called spermiation.

 

⚡️ Liberation of sperms from testes is called semination.

 

⚡️ Liberation of sperms from body of male is called ejaculation .

 

⚡️ Mammalian sperms are transfered to vagina of female by the process called insemination.

 

⚡️ In 1 ml of semen, 20 to 120 millions of sperms are present in human being.

 

⚡️ Leydig's cells mature at 10 yrs. of age.

 

⚡️ In humans (and most vertebrates), the first polar body does not undergo meiosis II.

 

⚡️ The first polar body is, therefore, formed merely to get rid of unwanted chromosomes.

 

⚡️ 65-74 days are required to complete the cycle of spermatogenesis in human being.