Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 49, Problem 3A
The difference between the amphibian and mammal hearts is that
a. in the amphibian heart, oxygenated and deoxygenated blood mix completely in the single ventricle.
b. in the amphibian heart, there are two SA nodes so that contractions occur simultaneously throughout the heart.
c. in the ventricle in the amphibian heart, internal channels reduce mixing of blood.
d. in the amphibian heart, only the left aorta pumps oxygen obtained by diffusion through the skin.
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Chapter 49 Solutions
Biology
Ch. 49 - An ECG measures a. changes in electrical potential...Ch. 49 - Systole is vitally important to heart function and...Ch. 49 - Which of the following is the correct sequence of...Ch. 49 - Which of the following statements is not true? a....Ch. 49 - Prob. 5UCh. 49 - Prob. 6UCh. 49 - When a sphygmomanometer is used, a. blood pulses...Ch. 49 - Prob. 8UCh. 49 - In vertebrate hearts, atria contract from the top,...Ch. 49 - Prob. 2A
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