Which of the following is true in reference to what may pass through the placental barriers?
A) hormones, blood cells, and nutrients
B) nutrients and respiratory gases only
C) respiratory gases, hormones, nutrients, and blood cells
D) nutrients, respiratory gases, wastes, and alcohol

Question

Quizplus · Accepted Answer

The placental barrier allows the passage of nutrients, respiratory gases, wastes, and substances like alcohol from the maternal blood to the fetus. It does not typically allow most blood cells to pass through, ensuring that substances essential for fetal development are transferred while attempting to block harmful substances and pathogens.

Which of the Following Is True in Reference to What