The placenta allows which of the following to pass into fetal blood?
1) maternal blood cells
2) most microorganisms
3) many drugs
4) viruses that cause AIDS, German measles, and chickenpox
5) alcohol
A) 1, 3, 4, 5
B) 3, 4, 5
C) 1, 2, 4, 5
D) 1, 2

Question

The placenta allows which of the following to pass into fetal blood? 
1) maternal blood cells
2) most microorganisms
3) many drugs
4) viruses that cause AIDS, German measles, and chickenpox
5) alcohol
A) 1, 3, 4, 5
B) 3, 4, 5
C) 1, 2, 4, 5
D) 1, 2

Quizplus · Accepted Answer

The placenta acts as a barrier that prevents most maternal blood cells and many microorganisms from passing into fetal blood. However, it does allow the passage of many drugs, viruses such as those causing AIDS, German measles, and chickenpox, and substances like alcohol, which can affect fetal development.

The Placenta Allows Which of the Following to Pass into Fetal