17.
During the third trimester, passive immunity to some diseases is provided by the
mother. The fetus receives temporary protection from the following diseases:
_______________________
_______________________
_______________________
_______________________
_______________________
_______________________
18.
What changes occur in circulation after birth to the following parts?
Umbilical vein -_______________________
Ductus venosus - _______________________
Umbilical arteries - _______________________
Foramen ovale - _______________________
Ductus arteriosus -
19.
The _______________________ acts as the intermediary organ of transfer
between the mother and the fetus.
20.
How does the fetus receive oxygen? _______________________
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2-20
MD0921