Examlex
Opening a chemically-gated ____________________ channel or ____________________ channel will increase the membrane potential of a plasma membrane.
Embryo
An early stage of development in multicellular organisms, following fertilization and before fetal stages in animals.
Placenta
A specialized organ in mammals that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood supply.
Zygote
The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of embryonic development.
Embryo
An early stage of development in multicellular organisms, in humans referring to the stage after fertilization up to the end of the eighth week of gestation.
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