Question

5. What do the "lub" and "dup" sounds of the cardiac cycle represent, and when do they occur? (1 pt) A) "Lub" occurs when the atrioventricular valves close at the beginning of systole, and "dup" occurs when the semilunar valves close at the beginning of diastole. B) "Lub" occurs when the semilunar valves close at the end of systole, and "dup" occurs when the atrioventricular valves close at the end of diastole. C) "Lub" occurs when the atrioventricular valves open at the beginning of diastole, and "dup" occurs when the semilunar valves open at the end of systole. D) "Lub" occurs when the semilunar valves open at the beginning of systole, and "dup" occurs when the atrioventricular valves open at the beginning of diastole. E) "Lub" occurs when the atrioventricular valves close at the end of systole, and "dup" occurs when the semilunar valves close at the end of diastole.

          5. What do the "lub" and "dup" sounds of the cardiac cycle represent, and when do
they occur? (1 pt)
A) "Lub" occurs when the atrioventricular valves close at the beginning of systole, and
"dup" occurs when the semilunar valves close at the beginning of diastole.
B) "Lub" occurs when the semilunar valves close at the end of systole, and "dup" occurs
when the atrioventricular valves close at the end of diastole.
C) "Lub" occurs when the atrioventricular valves open at the beginning of diastole, and
"dup" occurs when the semilunar valves open at the end of systole.
D) "Lub" occurs when the semilunar valves open at the beginning of systole, and "dup"
occurs when the atrioventricular valves open at the beginning of diastole.
E) "Lub" occurs when the atrioventricular valves close at the end of systole, and "dup"
occurs when the semilunar valves close at the end of diastole.

5 what do the lub and dup sounds of the cardiac cycle represent and when do they occur 1 pt a lub occurs when the atrioventricular valves close at the beginning of systole and dup occurs whe 42506

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