Question

Given below are certain situations. Analyse the situation and suggest the name of suitable contraceptive device along with mode of action.

Situation	Requirement of contraceptive for -	Name of contraceptive device	Mode of action
1	blocking the entry of sperms through cervix	______	______
2	spacing between children	______	______
3	effective emergency contraceptive	______	______
4	terminal method to prevent any more pregnancy in female	______	______
5	sterilization in male	______	______

Answer 1

Situation	Requirement of contraceptive for -	Name of contraceptive device	Mode of action
1	blocking the entry of sperms through cervix	Diaphragms/cervical caps/vaults	Cover the cervix during coitus.
2	spacing between children	Cu or hormone releasing IUDs such as Cu T/Cu7/Multiload 375/Progestasert/LNG 20	Cu ions from Cu containing IUDs increase phagocytosis of sperms within uterus, suppress sperm motility and fertilizing capacity/hormone releasing IUDs make uterus unsuitable for implantation.
3	effective emergency contraceptive	Pills containing Progestogens or progestogen-estrogen combination or IUDs within 72 hours of coitus.	Pills inhibit ovulation and implantation as well as alter the quality of cervical mucus to prevent the entry of sperms/IUDs - Cu ions increase phagocytosis of sperms within uterus, suppress sperm motility and fertilizing capacity/hormone releasing IUDs make uterus unsuitable for implantation.
4	terminal method to prevent any more pregnancy in female.	Tubectomy	Block gamete transport and prevent conception.
5	sterilization in male.	Vasectomy	Blocks sperm transport.