Explanation Justification for the correct answer: Option (a) is given as 1/10 the pressure. The pulmonary artery has a mean pressure of 15 mm Hg and the pressure in the left atrium is 5 mm Hg. Thus, for the blood to move through the lungs, 15mm Hg – 5mm Hg = 10 mm Hg driving pressure is needed. Similarly, the driving pressure needed in systemic circulation is 98 mm Hg, which is 10 times more than the pressure in the pulmonary circulation. Hence, option (a) is correct. Justification for the incorrect answers: Option (b) is given as 1/4 th the pressure. It is incorrect because the mean right arterial pressure is 2 mm Hg and the mean intravascular pressure in the aorta is 100 mm Hg. Therefore, the driving pressure needed in systemic circulation is 98 mm Hg. Also, the driving pressure needed in pulmonary circulation is 10 mm Hg, which is about 10 times less. Hence, option (b) is incorrect. Option (c) is given as 1/3 the pressure...

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ISBN: 9781337794909

Author: Des Jardins, Terry.

Publisher: Cengage Learning,

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Chapter 5, Problem 10RQ

Summary Introduction

Introduction:

Pulmonary circulation refers to the flow of blood from the right side of the heart to the lungs through the pulmonary trunk. Systemic circulation refers to the flow of blood from the left side of the heart to all the tissues. Pulmonary circulation operates for the oxygenation of the blood, which have been deoxygenated, while the systemic circulation is for the distribution of blood throughout the body. The pressure in the vessels of both these circulatory systems varies. The pressure in the pulmonary circulation is low as compared to that in the systemic circulation.

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Chapter 5 Solutions

Cardiopulmonary Anatomy & Physiology

Ch. 5 - 1. Which of the following are granulocytes? 1....Ch. 5 - Prob. 2RQ Ch. 5 - Prob. 3RQ Ch. 5 - If the pressure in the pulmonary artery is 34 mm...Ch. 5 - The tricuspid valve lies between the A. Right...Ch. 5 - Prob. 6RQ Ch. 5 - The mean intraluminal pressure in the pulmonary...Ch. 5 - An increase in the number of which of the...Ch. 5 - 9. The force the ventricles must work against to...Ch. 5 - Prob. 10RQ

Ch. 5 - The difference between the pressure in the lumen...Ch. 5 - Prob. 12RQ Ch. 5 - Prob. 13RQ Ch. 5 - Which of the following cause(s) passive changes in...Ch. 5 - Prob. 15RQ Ch. 5 - Case 1 As the patients blood pressure decreased...Ch. 5 - Prob. 1CAQ2 Ch. 5 - Prob. 1CAQ3 Ch. 5 - Case 1 4. The negative trans mural pressure in...Ch. 5 - Prob. 2CAQ1 Ch. 5 - Prob. 2CAQ2 Ch. 5 - Case 2 As fluid accumulated in the patients...Ch. 5 - Prob. 2CAQ4 Ch. 5 - Prob. 2CAQ5

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