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Body Fluids and Circulation — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBody Fluids and Circulation1 Mark
MCQ
Which one of the following is a correct matching pair?
  • A
    Dup $-$ Sudden opening of semilunar valves at the beginning of ventricular diastole.
  • B
    Pulsation of the radial artery valves in the blood vessels.
  • C
    Purkinje fibers $-$ Initiation of the heart beat.
  • ✓
    Lubb $-$ Sharp closure of $AV$ valves at the beginning of ventricular systole.
✓

Answer

Correct option: D.
Lubb $-$ Sharp closure of $AV$ valves at the beginning of ventricular systole.

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