Biology (MindTap Course List)
Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 44, Problem 12TYU
Summary Introduction

To explain: How is the heart of a fish specifically adapted to its lifestyle.

Introduction: In vertebrates, the circulatory systems of the animals modified through evolution, so that animals can adapt to their lifestyle. Some vertebrates have a single circuit for circulation and some have the double circuit for the blood flow. The heart of the fish is also designed in a different way to overcome the problem with a double-chambered heart.

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1. Reports about a man who successflly undergone xenotransplantation of a pig heart in replacement of the defective human heart created media attention due to a possible breakthrough attention. However, news has broken that he survived and died after months. Considering your knowledge about evolution and comparative anatomy, do you think it is possible to substitute a pig heart for a human heart? Why? Why not? Explain your answers using what you have learned so far in the subject. Additional readings: https://www.bbc.com/news/health-60681493, https://www.nytimes.com/2022/03/09/health/heart-transplant-pig-bennett.html https://www.discovermagazine.com/health/scientists-achieve-breakthrough-on-path-to- pig-to-human-heart-transplants
Discuss how contraction and relaxation of arteriolar vascular smooth muscle regulates peripheral blood flow.
How does a change in the circulatory system organization support the body designs in cephalopods compared to other mollusks?
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