By which of the following means does the fetus's blood pick up nourishment from the mother?

Question

Quizplus · Accepted Answer

The fetus's blood and the mother's blood do not mix, so direct circulation or indirect circulation are not the means by which the fetus's blood picks up nourishment from the mother. Instead, nutrients and oxygen diffuse from the mother's blood vessels in the uterus into the placenta and then into the fetal blood vessels. This process occurs through the process of diffusion, where nutrients and oxygen move from areas of high concentration (in the mother's blood vessels) to areas of low concentration (in the fetal blood vessels). Osmosis is not the correct choice because it refers to the movement of water molecules across a selectively permeable membrane.

By Which of the Following Means Does the Fetus's Blood