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Human embryonic development (zygote (Is the union of the sperm cell and…
Human embryonic development
zygote
Is the union of the sperm cell and the egg cell. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization.
Blastocyst
It possesses an inner cell mass (ICM) which subsequently forms the embryo
Implantation
Is the stage of pregnancy at which the embryo adheres to the wall of the uterus. It is by this adhesion that the embryo receives oxygen and nutrients from the mother to be able to grow.
Fertilization
Development begin with fertilization. After fertilization, the zygote undergoes cleavage to form the blastula. The blastula, which in some species is a hollow ball of cells, undergoes a process called gastrulation, in which the three germ layers form.
Gastrulation
Is a phase early in the embryonic development of most animals, during which the single-layered blastula is reorganized into a multilayered structure known as the gastrula.
Neurulation
The events that occur during neurulation mark the beginning of the formation of the central nervous system. The first event in neurulation is the formation of a thickened area of cells, called the neural plate.
Process of fertilization
The process of fertilization involves a sperm fusing with an ovum. ... The sperm plasma, then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus.
Function of the placenta
The placenta serves as an interface between the mother and the developing fetus and has three main jobs: Attach the fetus to the uterine wall. Provide nutrients to the fetus. Allow the fetus to transfer waste products to the mother's blood.
type of tissues are formed by the gastrulation and neurulation?
During neurulation, ectoderm also forms a type of tissue called the neural crest, which helps to form structures of the face and brain. The endoderm produced during gastrulation will form the lining of the digestive tract, as well as that of the lungs and thyroid.
S.N.(2019) embryonic development. Recuperado el 05/11/2019. Recuperado de.
https://www.britannica.com/science/fertilization-reproduction
S.N.(S.F.) recuperado de 24.6. Fertilization and Early Embryonic Development
https://opentextbc.ca/biology/chapter/24-6-fertilization-and-early-embryonic-development/