Ahmed Ayesh ‘Rapid Review of Embryology First Edition eBook Free Download

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Ahmed Ayesh ‘Rapid Review of Embryology First Edition eBook Free Download

Ahmed  Ayesh ‘Rapid Review of  Embryology First Edition eBook Free Download

Ahmed Ayesh ‘Rapid Review of Embryology First Edition eBook Free Download  Upon completing this part, you should be able to:
● Differentiate between the mitotic and meiotic divisions.
● List the process that occurs during the first week of development.
● Identify the structures which appear during the week of “twos”.
● Mention the structures formed at the week of gastrulation.
● Explain the mechanism of the embryonic folding and its results.
● Term the derivatives of the ectoderm, mesoderm and endoderm.
● Describe the formation of the fetal membranes and its roles\anomalies.
● Talk about the embryological basis of twins and its types.

 

Parent cell divides into two identical daughter cells, each cell contains diploid number of
chromosomes, occurs only in the somatic cells, as follows;
i. Interphase: DNA replication.
ii. Prophase: Each chromosome formed of two sisters/identical chromatids → shorten and thicken, joined at the centromere, spindle fibers appear, centrioles move to the opposite poles (in animal cells only).

iii. Prometaphase (end of prophase): Nucleolus and nuclear membrane disappear.
iv. Metaphase: Chromosomes line up on equatorial plane and become attached to
spindle fibers by its centromere.
V. Anaphase: Chromatids split into two and move to opposite poles.
vi. Telophase: Spindle fibers disappear, nucleolus and nuclear membrane reappear  and the cytokinesis (cytoplasm division) occurs.

Ahmed Ayesh ‘Rapid Review of Embryology First Edition eBook Free Download

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