The fine, downy, unpigmented hair that appears on a fetus in the last 3 months of development is called Lanugo.
The liquid surrounding the fetus is called amniotic fluid.
The "hairs" on a paramecium are called cilia.
For the first 8 weeks the developing human is called an embryo after that it is called a fetus.
The embryonic period extends to the end of the eight week. After the embryonic period (8weeks), the developing human is called a fetus.
In week 9 the fetus begins to develop fingernails and body hair. By week 13 fine hairs begin to grow on the head.
A group of hairs is called a hank or a tress.
Fetus
Those hairs are called mustache.
the tiny hairs are called CILIA
No
One unborn baby is called a fetus. More than one unborn baby in one mother's uterus are called fetuses. At the moment a fetus is born it is called a neonate-- or more commonly put, it is called a "baby" or "infant". But until it is born, it is a fetus.