In man sperms move after ejaculation at a rate of nearly
$2$ to $4$ mm/minute
$2$ to $4$ feet/minute
$2$ to $4$ inches/minute
$2$ to $4$ cm/minute
Cells of leydig are found in
Sequence of hormones during menstrual cycle is
Saheli is a oral contraceptive containing
$A$ : Oxytocin acts on the uterine muscles and cause stronger uterine contractions, which in turn stimulates further secretion of oxytocin.
$R$ : Oxytocin is released from maternal pituitary
Normally the gametes are disease free in human beings or even in other animals because