BIOL 273L- Midterm Exam Guide - Comprehensive Notes for the exam ( 15 pages long!)
5 Oct 2017
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The valves are elastic and cause blood to backsurge into the ventricles, setting up vibrations within them which can be heard on the chest wall: in the auscultatory method of measuring the blood pressure, what causes the first. Korotkoff sound: korotkoff sounds result from turbulence in the blood, as the cuff is filled with air, a pressure is attained which cuts off all flow through the brachial artery. When this pressure is gradually released, the point will be reached at which the blood will squirt through the constricted artery with each systole (contraction) of the heart, causing a rhythmic rushing sound, the first korotkoff sound. Intercalated disks are specialized junctional connections between adjacent cardiocytes. Veins contain unidirectional valves that keep blood flowing from the veins near the surface of the skin to the veins in the arms and legs and then to the heart.
