Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 51.4, Problem 1CS
Summary Introduction
To determine: The reason for the placenta circulation being similar to pulmonary circulation.
Introduction: In mammals, the fetus develops within the body of the mother and the developing fetus extracts all the nutrients from the mother for its growth. The placenta acts as the connecting link between the body of the mother and of the fetus. The blood flowing in the placenta carries the oxygen and nutrients for the fetus.
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Fill in the blank:
_________________ fluid protects the embryo from jarred movements and provides a watery environment fordevelopment.
Which statement does NOT accurately describe somites?
series of tissue blocks
form the ribs and intercostal muscles
paired structures running along either side of the neural tube
derived from neural crest tissue on the ventral surface of the embryo
Which of the following statements is NOT correct about the umbilical cord?
a. The umbilical cord is formed from the yolk sac and the allantois.
b. The umbilical cord is formed from the chorion.
c. The umbilical cord consists of two arteries and one vein.
d. The placenta connects to the embryon via the umbilical cord.
Chapter 51 Solutions
Biology
Ch. 51.1 - CoreSKILL How did Paland and Lynch test the...Ch. 51.1 - CoreSKILL Approximately how many times more often...Ch. 51.1 - Prob. 3EQCh. 51.3 - Prob. 1CSCh. 51.4 - Prob. 1CSCh. 51.4 - Prob. 2CSCh. 51.4 - Prob. 1CCCh. 51 - Prob. 1TYCh. 51 - Which is considered an advantage of sexual...Ch. 51 - Prob. 3TY
Ch. 51 - Prob. 4TYCh. 51 - Prob. 5TYCh. 51 - Prob. 6TYCh. 51 - A major function of FSH is to a. stimulate the...Ch. 51 - During the human ovarian cycle, ovulation is...Ch. 51 - Prob. 9TYCh. 51 - Prob. 10TYCh. 51 - Prob. 1CQCh. 51 - Prob. 2CQCh. 51 - Prob. 3CQCh. 51 - Prob. 1COQCh. 51 - Describe the events of the ovarian and uterine...
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- Trophoblast or ICM? If cells choose to become trophoblast, they will end up in the placenta. If they choose to become ICM, they will give rise to the 3 germ layers that will make up the rest of the body of the embryo. Answer the following questions: What will guide them to make the right decision? Do they have a choice?arrow_forwardA Survey of Human Development from Fertilization to Birth 4. The gestation of a fetus occurs over 9 months and is divided into three trimesters. Describe the major events that occur in each trimester. Is there a point at which the fetus becomes more human?arrow_forwardFigure 29.22 Which of the following statements about the parts of an amniotic egg are false? The allantois stores nitrogenous waste and facilitates respiration. The chorion facilitates gas exchange. The yolk provides food for the growing embryo. The amniotic cavity is filled with albumen.arrow_forward
- Figure 27.5 If a Hox 13 gene in a mouse was replaced with a Hox 1 gene, how might this alter animal development?arrow_forwardFrom which of the following is the embryo developed? Trophoblasts Inner cell mass Blastocoelen The yellow sacksarrow_forwardAll of the cell types of an adult vertebrate develop from three primary embryonic germ cell layers, e.g. skin epithelium originates from ____ and intestinal epithelium from ____. A)ectoderm, endoderm B)ectoderm; ectoderm C)endoderm; endoderm D)endoderm; ectodermarrow_forward
- Fill in the blank: The embryonic membrane that is attached to the edge of the embryonic disk and surrounds the developing body is called the ___________________.arrow_forwardAfter the eighth week of development an embryos is referred to as what?arrow_forward......... is not developmental event in human and frog. After fertilization rapid cycle of mitosis occurs formation of mesoderm,ecto and endoderm formation of placenta from trophoblast large cellular movement during gastrulationarrow_forward
- Component of bilaminar germ disc: a.Hypoblast and endoderm b.Epiblast and hypoblast c.Epiblast and ectoderm d.Ectoderm and mesodermarrow_forwardwhat evolutionary advantages does the amniotic egg have? explain how each component of the egg plays a role in survival of the embryoarrow_forwardIn this discussion, you will discuss the evolutionary advantages of the amniotic egg. Explain how each component of the egg plays a role in survival of the embryo.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