Breathing and Exchange of GasesHard

Question

Which one of the following is a matching pair?

Options

A.Lubb - Sharp closure of AV valves at the beginning of ventricular systole.
B.Dup - Sudden opening of semilunar valves at the befinning of ventricular diastole.
C.Pulsation of the radial artery valves in the blood vessels.
D.Purkinje fibrs - Initiation of the heart beat.

Solution

First sound is know as Lubb. It is dull sound and prolonged. It is created by closer of AV valve and is developed at the time of ventricular systole.

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