After the first eight weeks, the embryo is referred to as a fetus. At this stage, the major organs have formed and the fetus continues to grow and develop until birth.
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.
A fetus is generally not visible on ultrasound until about 5-6 weeks of pregnancy. At 3 weeks, the embryo is very small and not typically detectable on ultrasound.
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).
The period of time during which a zygote, embryo, or fetus is carried in the female reproductive tract is approximately 38-40 weeks in humans. This time frame consists of three stages: zygote (fertilized egg), embryo (up to 8 weeks), and fetus (9 weeks until birth).
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.
At 12 weeks of development, a fetus does not have the neurological development to feel pain.
the fetus will start kicking around 25 weeks