Most mammals, including humans have alecithal type of egg, which means that there is negligible or no amount of stored yolk in its cytoplasm. How would a developing mammalian embryo get its nourishment?

Most mammals, including humans have alecithal type of egg, which means that there is negligible or no amount of stored yolk in its cytoplasm. How would a developing mammalian embryo get its nourishment?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter29: Vertebrates

Section: Chapter Questions

Problem 2VCQ: Figure 29.22 Which of the following statements about the parts of an amniotic egg are false? The...

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Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.

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Most mammals, including humans have alecithal type of egg, which means that
there is negligible or no amount of stored yolk in its cytoplasm. How would a
developing mammalian embryo get its nourishment?

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In insect embryonic development, the fertilized egg nucleus divides repeatedly giving rise to multiple nuclei that migrate to the periplasm (peripheral cytoplasm) and become cells called ____ or remain in the yolk and become cells called ____ that digest the yolk. A region of the cells that form in the periplasm thickens and become the____ , which develops into the embryo.
The olfactory pits form from which of the following? mesoderm cartilage ectoderm endoderm
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A fertilized egg, also called a________ , is a very large cell. One of the first events of animal development is the division of this cell, a process called______ , to produce a solid ball of much smaller cells, the_______. Soon, a cavity opens in this ball of cells, producing a hollow ball called the__________ . Movements of cells in this hollow ball during gastrulationproduce the three embryonic tissue layers, the______,________ , and________ .
Complete the following table with the functions of each of the embryonic membranes: Embryonic Membrane Function Yolk sac Chorion & Chorionic villi Allantois Amnion
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