Examlex
Across adolescence,the crowd structure
Extraembryonic Membrane
Membranes outside the embryo that contribute to the developing embryo's life support system in various ways, such as gas exchange and waste management.
Placenta
An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the developing fetus through the umbilical cord.
Human Embryo
The early developmental stage of humans following conception and prior to fetal development.
Nervous System
Organ system that gathers information about the internal and external environment, integrates this information, and issues commands to muscles and glands, all by way of neurons.
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