Emergency Care and Transportation of the Sick and Injured ...

The thorax is an airtight box with the flexible diaphragm at the bottom and the open tube (trachea) at the top. ... Wipe the main tubing with an all-purpose cleaner. (b) Diaphragm is for high-pitched sounds; bell is for low-pitched sounds ... As the diameter of a tube decreases, resistance to flow increases exponentially. ... ................
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