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Results for: 'zygote'

Fertilization and Development

By: HWC, Views: 3210

• Fertilization is the process by which the two gametes from the parents fuse their genetic material to form a new individual (zygote). • Fertilization requires that sperm cells swimming through the uterine tube contact a secondary oocyte. • Once sperm penetrate the secondary oocyte's ...

Fertilization Animation

By: Administrator, Views: 193

At conception, the gender and other biologic traits of the new individual are determined. The zygote is genetically complete and immediately begins to divide, forming a solid mass of cells called a morula. When the developing embryo (stage of development between weeks 2 and 8) reaches the ute...

Rh blood type and complications during pregnancy & Fertilization

By: HWC, Views: 262

Complications can arise if an Rh- woman is impregnated by an Rh+ man. The fetus maybe Rh+. During childbirth, some of the fetal Rh+ cells may leak into the maternal bloodstream. The woman's immune system views the Rh+ as foreign and makes antibodies against it. If the woman becomes pr...

Cleavage and Implantation Animation

By: HWC, Views: 251

✔ ✔ ✔ Ask questions here: Follow us: ▶ Facebook: ▶ Review Us: Fertilization typically takes pl...

Spermatogenesis Animation

By: Administrator, Views: 6084

Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. This process starts with the mitotic division of the stem cells located close to the basement membrane of the tubules. These cells are called spermatogonial stem cells. T...

Embryonic development - week 1 and 2

By: HWC, Views: 3073

The first through eighth weeks after fertilization are called the embryonic. Week 1 • Within a day, the zygote begins mitotic cell division (cleavage) forming blastomeres. By the 4th day, the blastomeres have formed a solid ball called a morula. • The morula enters uterine cavity ar...