LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Chapter 22, Problem 6CR
Summary Introduction
To explain:
The reason due to which the walls of the atria are thinner than the ventricles and the walls of the right ventricle are relatively thinner than the walls of the left ventricle.
Introduction:
The heart contains four hollow chambers: the right atrium, right ventricle, left atrium, and left ventricle. Each of these chambers plays a role in the continuous process of blood circulation. The cardiac muscle cells are arranged in spiral bundles around the heart chambers that are attached to the fibrous skeleton.
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Explain why the walls of the atria are thinner than those of the ventricles, and why the wall of the right ventricle is relatively thin when compared to the wall of the left ventricle.
Explain why the walls of the atria are thinner than those of theventricles, and why the walls of the right ventricle are relativelythin when compared to the walls of the left ventricle.
Explain the structural differences between the atria and ventricles.
Chapter 22 Solutions
LooseLeaf for Human Anatomy
Ch. 22 - What is the basic distinction between arteries and...Ch. 22 - Prob. 2WYLCh. 22 - Prob. 3WYLCh. 22 - Identify the layers of the pericardium. Why is the...Ch. 22 - Prob. 5WYLCh. 22 - What are two similarities and two differences...Ch. 22 - What is the composition and function of the...Ch. 22 - Prob. 8WYLCh. 22 - Prob. 9WYLCh. 22 - Prob. 10WYL
Ch. 22 - Prob. 11WYLCh. 22 - Prob. 12WYLCh. 22 - Prob. 13WYLCh. 22 - What events occur in the ventricles during late...Ch. 22 - Prob. 15WYLCh. 22 - Match each numbered item with the most closely...Ch. 22 - Prob. 1MCCh. 22 - Prob. 2MCCh. 22 - Prob. 3MCCh. 22 - Prob. 4MCCh. 22 - Prob. 5MCCh. 22 - In the developing heart, the atria form from the...Ch. 22 - The irregular muscular ridges in the ventricular...Ch. 22 - Prob. 8MCCh. 22 - Prob. 9MCCh. 22 - The thickest part of the heart wall is the a....Ch. 22 - What are the differences between the pulmonary and...Ch. 22 - Prob. 2CRCh. 22 - Prob. 3CRCh. 22 - Where is the fibrous skeleton of the heart...Ch. 22 - Prob. 5CRCh. 22 - Prob. 6CRCh. 22 - Identify and compare the branches of the right and...Ch. 22 - Compare cardiac and skeletal muscle. In what ways...Ch. 22 - Prob. 9CRCh. 22 - Prob. 10CRCh. 22 - It was the end of the semester, and Huang had...Ch. 22 - Prob. 2DCR
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- Describe the pressure-volume curve of the left ventriclearrow_forwardIn dilated cardiomyopathy of the left ventricle, the ventricle can become enormously enlarged. Explain why this might lead to regurgitation of blood through the mitral valve (blood flowing from the ventricle back into the left atrium) during ventricular systole?arrow_forwardWhich of the following statements are true? (a) The left ventricle wall is thicker than the right ventricle wall. (b) The left ventricle pumps blood at a higher pressure than the right ventricle. (c) The left ventricle pumps more blood with each beat than the right ventricle. Explain.arrow_forward
- Explain why the walls of the ventricles are thicker than the walls ofthe atriaarrow_forwardWhy is the wall of the left ventricle thicker thanthe wall of the right ventricle?arrow_forwardIf the length of the diastolic filling phase is reduced by one half because the heart rate increases, would only half as much blood enter the ventricles?arrow_forward
- Which ventricle has the thickest wall? Why is it important for eachventricle to pump approximately the same volume of blood?arrow_forwardWhat are two similarities and two differences between theright and left ventricles?arrow_forwardBecky, age 2, was born with a hole in her interventricular septum (ventricular septal defect, or VSD). Considering that the blood pressure in the left ventricle is significantly higher than blood pressure in the right ventricle, predict the effect of the VSD on Becky’s pulmonary blood pressure, systemic blood pressure, and long-term changes in the ventricular walls.arrow_forward
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