Pressure gradients drive blood flow from the heart to the tissues (systemic circuit) and the heart to the lungs (pulmonary circuit). The same amount of blood must flow through both the systemic circuit and the pulmonary circuit, and yet the pulmonary circuit experiences a significantly lower pressure gradient. Explain how this is the case

Pressure gradients drive blood flow from the heart to the tissues (systemic circuit) and the heart to the lungs (pulmonary circuit). The same amount of blood must flow through both the systemic circuit and the pulmonary circuit, and yet the pulmonary circuit experiences a significantly lower pressure gradient. Explain how this is the case

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter10: The Blood Vessels And Blood Pressure

Section10.2: Arteries

Problem 2CYU

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Frank-Starling law of the heart states: if you increase the stretch of the cardiac muscle fibers you will decrease the force of contraction a greater end diastolic volume will produce a weaker contraction of the ventricle by increasing the force of ventricular contraction you will increase the end systolic volume if you increase the stretch of the cardiac muscle fibers you will increase the force of contraction.
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As a result of ventricular depolarization (T wave), calcium ions are returned to the sarcoplasmic reticulum and ventricular muscles relax. As the myocardium relaxes, the semilunar valves close. At this time which of the following is true? Group of answer choices (A) ventricular pressure > aortic pressure > atrial pressure (B) atrial pressure > ventricular pressure > aortic pressure (C) aortic pressure > ventricular pressure > atrial pressure (D) aortic pressure > atrial pressure > ventricular pressure
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