Question: 178: IUDs are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about IUDs?
(a) IUDs decrease phagocytosis of sperm within the uterus.
(b) The released copper ions suppress the sperm motility.
(c) IUDs do not make the cervix hostile to the sperm.
(d) IUDs suppress the fertilization capacity of sperm.
(e) The IUDs require surgical intervention for their insertion in the uterine cavity.
Choose the most appropriate answer from the options given below :
(1) (a), (d) and (e) only
(2) (b) and (c) only
(3) (b) and (d) only
(4) (d) only
Answer: Option (3)
Explanation:
Intra Uterine Devices are commonly used contraceptive methods inserted into the uterus to prevent pregnancy.
Copper-releasing IUDs increase phagocytosis of sperms within the uterus,
so statement (a) is incorrect.
Copper ions released from IUDs suppress sperm motility and reduce their survival,
making statement (b) correct.
IUDs make the uterine environment hostile to sperms, so statement (c) is incorrect.
IUDs suppress the fertilization capacity of sperms by altering uterine and sperm physiology,
hence statement (d) is correct.
IUD insertion is a minor medical procedure and does not require surgical intervention,
making statement (e) incorrect.
Therefore, the correct statements are (b) and (d),
corresponding to option (3).