- Home
- Standard 12
- Biology
Find out correct choice for Cu based $IUDs$
$I$. Increases phagocytes of sperms
$II$. Releases $C u^{2+i i}$ ions that suppresses the sperms motility and fertilizing capacity of sperms
$III$. Make the uterus unsuitable for implantations
$I$, $II$ and $III$
$I$ and $II$
Only $I$
None of the above
Solution
$IUD$
$(i)$ Increases phagocytosis of sperms
$(ii)$ Releases ions that suppresses the sperm motility and fertilizing capacity of sperms
$(iii)$ Makes uterus unsuitable for implantation
Intra Uterine Devices $(IUDs)$ for contraception
$(i)$ There devices are inserted by the doctors into the uterus through vagina.
$(ii)$ There are three types of $IUDs$ Non-medicated $IUDs$ They increases the phagocytosis of the sperm within the uterus, $e.g$., Lippes loop Copper Releasing $IUDs$ Along with phagocytosis of the sperms, the copper ions released, suppresses the sperm motility and the fertilizing capacity of the sperm. $e. g ., Cu – T , Cu -7$, multiload$- 375$ Hormone Releasing $IUDs $They makes the uterus unsuitable for implantation and the cervix hostile to the sperms, $e.g. $progestasert, $LNG-20$
