Respuesta :
By nine week, the fetal period begins and involves the growth and differentiation of anatomical structures. The fetal period lasts until birth.
Ninth week is also considered as first trimester ,the pregnancy hormones at this stage are flooding in the body, which can cause unwell feeling at this stage this is termed as an embryo from conception until the eighth week of development. After the eighth week, it's called a fetus until it's born.
This development occurs inside the uterus which is hollow, pear-shaped organ located in a woman's lower abdomen, between the bladder and the rectum, that sheds its lining each month during menstruation.
To learn more about uterus , here
brainly.com/question/9778292
#SPJ4
