In vasectomy, a small part of which of the following is cut for sterilization?

Compared to a bullock,a bull has higher levels of which of the following?

$A$: The secretions of male accessory glands constitute the seminal plasma,which is rich in fructose,calcium,and certain enzymes. $R$: Fructose serves as a source of energy for the sperms.

Select the correct sequence of transport of sperm cells in the male reproductive system.

Stereocilia are present in the:

Where are the $Leydig$ cells found?