Question

What features of drugs facilitate placental transfer?

Answer 1

The placenta facilitates the transfer of substances between the mother and fetus through various features such as permeability to lipid-soluble substances, simple diffusion, facilitated diffusion, and active transport.

Step-by-step explanation:

The placenta facilitates the transfer of substances between the mother and fetus through various features:

1. The placenta is permeable to lipid-soluble substances like alcohol, nicotine, barbiturates, and certain pathogens
2. Some substances cross via simple diffusion, including oxygen and carbon dioxide
3. Other substances cross through facilitated diffusion, such as water-soluble glucose
4. Amino acids and iron are moved through the placenta via active transport