Blastocyst
The product of fertilization in humans is a zygote, which undergoes cell division to form a blastocyst. The blastocyst then implants into the uterus and continues to grow and develop into an embryo.
A blastocyst typically has around 100-200 cells by day 5 after fertilization. These cells are organized into an outer layer called the trophectoderm that will eventually form the placenta, and an inner cell mass that will develop into the embryo.
Pre-embryonic development is associated with processes including fertilization, cleavage, and formation of the blastocyst. During this stage, the zygote undergoes division and differentiation to form the blastocyst that will later implant into the uterine wall for further development into an embryo.
an unfertilized egg
a few days after fertilization
at the end of the first trimester
A few Days after Fertilization. (apex)
Blastocyst
The product of fertilization in humans is a zygote, which undergoes cell division to form a blastocyst. The blastocyst then implants into the uterus and continues to grow and develop into an embryo.
The inner cell mass of the blastocyst develops into the body of the embryo. This inner cell mass will give rise to the different cell types and structures that form the developing fetus.
The inner cell mass of the blastocyst will undergo gastrulation and form the embryo. This inner cell mass consists of pluripotent cells that will give rise to the various tissues and organs of the developing embryo.
After fertilization, the egg and sperm fuse to form a zygote. The zygote begins to divide and undergo cell division, forming a blastocyst. The blastocyst implants into the uterus lining, where it continues to grow and develop into an embryo.
After fertilization, the zygote undergoes rapid cell division to form a ball of cells called a blastocyst. The blastocyst then implants itself into the uterine lining where it continues to develop. The inner cell mass of the blastocyst eventually forms the embryo while the outer cells will become the placenta.
After fertilization, the embryo undergoes several cell divisions to form a ball of cells called a blastocyst. During this stage, the blastocyst travels through the fallopian tube to the uterus for implantation. Once in the uterus, the blastocyst attaches to the uterine lining and begins to receive nourishment from the mother's body.
Blastocyst.
About 100 cells make up a blastocyst.