BSCI 207 Lecture 16: BSCI207 - Lecture 16 - Circulatory System Continued
26 Jan 2016
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Bsci207 - lecture 16 - circulatory system continued. Sounds = irregular flow and blood starts to swirl around. When valves slam shut, you don"t have smooth flow so you hear sounds. No sounds = smooth flow (called laminar flow) When you take bp, doctors squeeze your arm so that no blood can pass through. Gradually release pressure, and at some point you start to hear sounds. Systolic = higher bp and diastolic = lower bp. No blood flowing through (cut off blood circulation) at first. Higher pressure when ventricule is squeezing (systole) Squeezing hard you don"t hear anything (no blood passing through) Less squeezing you hear blood flowing through but not smoothly/irregular flow b/c it"s going from a more open space to tighter space. Sound goes away when blood starts to flow smoothly (when squeezing loosens up) Path of respiratory gases in a mammalian circulatory system:
