It contains
villi on the embryo's side of the tissue. On
the mother's side there are blood spaces, which
surround the villi. This provides a large surface
area for passage of glucose and oxygen from the
mother to the embryo.
can anyone explain me what's the meaning of embryo's side and mother's side...in this paragraph
Answers
In this paragraph EMBRYO means ....
An embryo is the early stage of development of a multicellular organism. In general, in organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization and continues through the formation of body structures, such as tissues and organs. Each embryo starts development as a zygote, a single cell resulting from the fusion of gametes (i.e. fertilization of a female egg cell by a male sperm cell). In the first stages of embryonic development, a single-celled zygote undergoes many rapid cell divisions, called cleavage, to form a blastula, which looks similar to a ball of cells. Next, the cells in a blastula-stage embryo start rearranging themselves into layers in a process called gastrulation. These layers will each give rise to different parts of the developing multicellular organism, such as the nervous system, connective tissue, and organs...