Human Reproduction - Important points

 Important points - Human Reproduction 

1 Uterus also called womb.

 

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

 

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

 

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

 

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

 

6 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.

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

 

8 Liberation of sperms from testes is called semination.

 

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

 

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

 

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

 

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

 

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

 

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

 

15 65-74 days are required to complete the cycle of spermatogenesis in human being.