Questions and Answers
What is the name given to a body cavity that is completely surrounded by mesoderm?
Which term describes a solid mass of blastomeres resulting from several rounds of cleavage?
What is formed after the inward bending of the embryo begins?
Which structure forms the internal cavity after invagination during embryonic development?
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Which of the following describes the internal fluid-filled cavity of the blastula?
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Study Notes
Developmental Biology Terms
- Coelom: A body cavity completely surrounded by mesoderm, crucial for the development of complex organ systems.
- Blastomere: A type of cell resulting from the cleavage of the zygote after fertilization; important for early embryonic development.
- Morula: A solid mass of blastomeres formed after multiple cleavages of the zygote, generating a compact cluster that precedes the blastula stage.
Embryonic Structures
- Scizocoelous Plan: A pattern where a band of mesoderm surrounds the gut and subsequently splits open, contributing to body cavity formation.
- Blastopore: The initial opening to the gut formed during embryo development; marks the point where inward bending (invagination) begins.
- Blastocyst: The cluster of cells within the blastula stage; significant for further embryonic development and implantation in the uterine wall.
Internal Cavities
- Archentron: The internal cavity created after the process of invagination; plays a role in digestive system formation.
- Blastocoel: The fluid-filled cavity within the blastula; essential for the organization of cells during early development and nutrient distribution.
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Description
Test your knowledge on key embryological terms and concepts such as coelom, blastomere, morula, and blastopore. This quiz will assess your understanding of the early stages of embryonic development and the structure of embryos. Perfect for students studying developmental biology.
