Figure 10-62: The apex phonocardiogram is displayed simultaneously with the cardiac cycle, as recorded by high-fidelity catheter-tipped micromanometers in the central aorta, left ventricle (LV), and left atrium (LA). The first high-frequency component of Mj is coincident with the downstroke of the left atrial cwave and is separated from left ventricular-left atrial pressure crossover by an interval of 30 ms. (From Shaver JA, Saderni R, Reddy PS, et al. Normal and abnormal heart sounds in cardiac diagnosis: I. Systolic sounds. Curr Probl Cardiol i985; i0:i0-53. Reproduced with permission from the publisher and authors.)
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.