Conceptus

Definition

The conceptus is the entire product of conception from fertilization to birth, including the embryo or fetus as well as the placenta and associated membranes. It represents all structures that develop from the zygote, both embryonic and extra-embryonic.

Related terms

Zygote:

A zygote is a single cell formed by the fusion of two gametes (sperm and egg), marking the beginning of human development.

Embryo:

An embryo is an early stage of development for multicellular organisms, in humans it refers to stages from fertilization through 8 weeks when it then becomes known as a fetus.

Placenta:

The placenta is an organ that develops in the uterus during pregnancy, providing oxygen and nutrients to growing embryos/fetuses while removing waste products from their blood