The stage of development an organism goes through inside the womb, following the initial development of the embryo.
The stage of development an organism goes through inside the womb, following the initial development of the embryo. In humans we refer to the embryo as a foetus from around eight weeks after conception until birth. At the beginning of this foetal stage, a human foetus is about 2.5 to 3 centimetres long, and nearly half of its mass is the head.
In humans we refer to the embryo as a foetus from around eight weeks after conception until birth. At the beginning of this foetal stage, a human foetus is about 2.5 to 3 centimetres long, and nearly half of its mass is the head.