MCQ
Example of the non-medicated $IUD$ is
- A$Cu-T$
- B$Cu-7$
- CMultiload$-375$
- ✓Lippes loop
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, $LNG-20$
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$I.$ Increase in the volume of the thoracic chamber in dorsoventral axis
$II.$ Upward and outward movement of the ribs
$III.$ Contraction of intercostal muscles
$IV.$ Entry of air inside the lungs
$V.$ Contraction of the diaphragm
$VI.$ Increase in the volume of the thoracic chamber in antero-posterior axis
Choose the correct option
$R$ : All the three phyla include members with bilateral symmetry and true coelom.