Podcast
Questions and Answers
During which period of human development does the stage of organogenesis occur?
During which period of human development does the stage of organogenesis occur?
Which process is responsible for the creation of highly specialized sex cells?
Which process is responsible for the creation of highly specialized sex cells?
Where are primordial germ cells formed during human development?
Where are primordial germ cells formed during human development?
When do gametes derived from primordial germ cells arrive in the developing gonad?
When do gametes derived from primordial germ cells arrive in the developing gonad?
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What type of cell division increases the number of primordial germ cells during their migration?
What type of cell division increases the number of primordial germ cells during their migration?
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Study Notes
Human Development Stages
- Organogenesis occurs during the embryonic period, specifically between the third and eighth weeks after fertilization.
Sex Cell Development
- The process of gametogenesis is responsible for creating highly specialized sex cells: sperm in males and oocytes in females.
Formation of Primordial Germ Cells
- Primordial germ cells are formed in the epiblast layer of the developing embryo, specifically within the yolk sac region.
Arrival of Gametes
- Gametes derived from primordial germ cells arrive in the developing gonad (testes or ovaries) by the end of the sixth week of human development.
Cell Division During Migration
- Mitosis is the type of cell division that increases the number of primordial germ cells during their migration from the yolk sac to the developing gonads.
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Description
Test your knowledge of gametogenesis, including oogenesis and spermatogenesis, as part of the broader field of embryology. Learn about the sequence of events leading to the production of a new human being from a single cell (Zygote) over a 9-month period.
