In the context of the development of the conceptus, the ________ serves as a biochemical barrier, allowing dissolved substances to pass to the fetus but blocking some kinds of viruses and bacteria from passing into the fetal circulatory system.

Question

Quizplus · Accepted Answer

The placenta is a specialized organ that forms during pregnancy and serves as a biochemical barrier between the maternal and fetal circulatory systems. It allows for the exchange of dissolved substances, such as nutrients and oxygen, but also serves as a selective barrier against certain pathogens, toxins, and other harmful substances. This helps to protect the developing fetus from potential infections and other dangers that may be present in the mother's bloodstream. The endometrium is the inner lining of the uterus that is shed during menstruation and is not directly involved in the development of the conceptus. The umbilical cord is a flexible structure that connects the fetus to the placenta and contains blood vessels that transport nutrients and oxygen to the developing fetus. The fallopian tube is the site of fertilization and early development of the conceptus, but it is not involved in the formation or function of the placenta.

In the Context of the Development of the Conceptus, the ________