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The embryo weighs 1 gram between 5-8 weeks. A fetus is far bigger than one gram.
A fetus is a fetus until it is born at which time the umbilical is cut and it becomes a child. An other argument is that the foetus ceases to be a fetus at the time it is a viable human being and can live without the mothers support.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
The entire fetus will continue to grow proportionally until shortly before birth (about 38 weeks).
Eye components start to develop on a fetus at 7 weeks. It isn't until the 23 weeks that all of the eye components are developed. At 26 weeks the eyes can open and close.
It takes 26-40 weeks for a fetus' bones to fully develop.
gender is determined at the moment of conception, however it isn't until around the 16th to the 17th week of pregnancy that the sex of the fetus can be determined by ultasound.
the fetus will start kicking around 25 weeks
Never. Through out the entire pregnancy the fetus is in a sleep like state and can not feel pain until week 28-30.
2 weeks
normally a fetus is 5.6 cm on average
This happens around the 5th week of pregnancy. But will not be able to see this on a scan until your 16 weeks