Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 27.4, Problem 1TYK
The membrane of the amniotic egg that serves as a site for waste storage is the
- amnion.
- yolk sac.
- allantois.
- chorion.
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Complete the following table with the functions of each of the embryonic membranes:
Embryonic Membrane
Function
Yolk sac
Chorion & Chorionic villi
Allantois
Amnion
This is the outermost layer that protects from water loss but allows for gas exchange:
amnion
allantois
chorion
yolk sac
What is the purpose of the placenta?
Which part of the blastocyst eventually becomes the fetal placenta?
In birds, developing chicks rely on the yolk sac to provide essential nutrients, but in humans, this is not the case. Why don’t we need it to provide nutrition?
What is amniocentesis? How is it done?
Chapter 27 Solutions
Principles of Biology
Ch. 27.1 - Prob. 1CCCh. 27.1 - Which of the following is not a defining...Ch. 27.1 - Prob. 2TYKCh. 27.2 - Prob. 1BCCh. 27.2 - What features distinguish ray-finned fishes from...Ch. 27.2 - Prob. 2CCCh. 27.2 - Prob. 1TYKCh. 27.2 - Prob. 2TYKCh. 27.2 - Prob. 3TYKCh. 27.3 - Prob. 1CC
Ch. 27.3 - Prob. 2CCCh. 27.3 - Prob. 1TYKCh. 27.3 - Prob. 2TYKCh. 27.4 - What are the other critical innovations of...Ch. 27.4 - Prob. 2CCCh. 27.4 - Look ahead to Figure 33.2c. In what ways...Ch. 27.4 - Prob. 3CCCh. 27.4 - The membrane of the amniotic egg that serves as a...Ch. 27.4 - Prob. 2TYKCh. 27.4 - Prob. 3TYKCh. 27.4 - Prob. 4TYKCh. 27.5 - Prob. 1TYKCh. 27 - Prob. 1TYCh. 27 - The presence of a bony skeleton, an operculum, and...Ch. 27 - Prob. 3TYCh. 27 - Which clade does not include frogs? vertebrates...Ch. 27 - Prob. 5TYCh. 27 - The outermost membrane of the amniotic egg is the...Ch. 27 - Which characteristic qualifies lizards as...Ch. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CCQCh. 27 - Why arent all reptiles endothermic if both birds...Ch. 27 - A principle of biology is that all species (past...Ch. 27 - Prob. 1CBQCh. 27 - Prob. 2CBQ
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Define and describe the main features of the following developmental stages: fertilization, cleavage, gastrulation.arrow_forwardAmong the germ layers and developmental structures below: What is/are the FORMED ANATOMICAL ORGAN/PART (of the infant)? Indicate if it disappears or dissolved in the process of development. •amniotic cavity •blastula •cleavage •ectoderm •embryoblast •embryonic disc •endoderm •epiblast •fertilization •gametes •gastrulation •hypoblast •intermediate mesoderm •lateral plate mesoderm •mesoderm •morula •neural crest cells •neurulation •notochord •occipital somites •paraxial mesoderm •primitive node •primitive streak •trophoblast •yolk sacarrow_forwardFrom which of the following is the embryo developed? Trophoblasts Inner cell mass Blastocoelen The yellow sacksarrow_forward
- A: Why do sea urchins have external fertilization? [Discuss the life style of the developing sea urchin embryo in the water column compared to a very different ecological niche of the adults on the ocean floor. Besides, would you want to give live birth to a sea urchin! ouch!] 2: Then why don't the parents take care of the young? [In fact the adults do in a way. After the embryo has grown large enough and metamorphosed into a young urchin they hide in the spines of the adults, living off of the scraps of food produced from the messy eating of the adults] 3: Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?arrow_forwardWhat is the space Limited by the exo-coelomic membrane termed O primitive yolk sac Amniotic cavity Blastocyst Trophoblastarrow_forwardIt is the result of the union of human egg and sperm cell which initiates prenatal development. > embryo > zygote > morula > fetus > all of the abovearrow_forward
- Give the function/purpose of the following terms: germ layers ectoderm mesoderm endoderm blastocyst yolk sacarrow_forwardWhich of the following consists of both fetal and maternal tissues? (a) umbilical cord (b) placenta (c) amnion (d) allantois (e) yolk sacarrow_forwardContrast early development, including cleavage, in the echinoderm (or in amphioxus), the amphibian, and the bird, paying particular attention to the importance of the amount and distribution of yolk.arrow_forward
- Early Embryonic Development Match the following terms to the descriptor. NOTE: If you want to change your selection, you'll need to delete the one you already chose. After you delete it, the list of choices will pop back up and you can make a different choice. Organogenesis Hollow ball of cells Gastrulation Formation of organs Cleavage Rapid cell division Cells rearrange themselves into layers Blastulaarrow_forwardYolk sac (lined with endoderm). Maternal blood pool Amniotic cavity containing amniotic fluid Amnion Endometrium Chorion (derived from blastocyst cavity membrane) Allantois Endoderm layer becomes: 1) Digestive system 2) Liver 3) Pancreas 4) Lungs (inner layers) Mesoderm layer becomes: 1) Circulatory system Ectoderm layer becomes: 1) Hair 2) Lungs (epithelial layers) 2) Nails 3) Skeletal system 3) Skin 4) Muscular system 4) Nervous systemarrow_forwardName the four extra-embryonic membranes.arrow_forward
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Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY