Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 20, Problem 13aCP
List the fetal and maternal components of the placenta and describe the circulation in these two components. Explain how fetal and maternal gas exchange occurs.
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Chapter 20 Solutions
Human Physiology
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- Explain why it is so important that the blood of mother and offspring do not mix together in the placenta. List the structural features of the placenta that contribute to efficient exchange and explain why each is important.arrow_forwardDescribe the main functions of the placenta, and name the hormones that promote its development.arrow_forwardList the functions of hCG.arrow_forward
- Why would a premature infant require supplemental oxygen?arrow_forwardDuring pregnancy, the fetal circulatory system works differently than after birth. Answer the following questions: What are the fetal blood vessels that underwent transformation as a result of transition from a fetus to a newborn? What are the underlying reasons behind these changes? Give examples of diseases resulting from failure of these changes to develop normally.arrow_forwardIdentify the structure that secretes hCG.arrow_forward
- Describe the functions performed by the placenta for the developing embryo, and in each case, explain the mechanism that allows it to perform such function.arrow_forwardWhich of the following is a function of hCG?arrow_forwardIdentify three substances the mother provides the fetus through the placenta.arrow_forward
- Trace the fetal - maternal blood circulation. Explain how the blood gets oxygenated whilst bypassing the lungs.arrow_forwardExplain the function of the placenta.arrow_forwardVisit this site (http://openstaxcollege.org/l/pregstages)for a summary of the stages of pregnancy, as experiencedby the mother, and view the stages of development of thefetus throughout gestation. At what point in fetaldevelopment can a regular heartbeat be detected?arrow_forward
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