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STD 11 - 15. Body fluids and criculations — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 15. Body fluids and criculations1 Mark
MCQ
Cardiac output is
  • A
    Stroke volume $\times$ Heart rate $=60\; mL /$ beat $\times 72\; bpm$
  • ✓
    Stroke volume $\times$ Heart rate $=70\; mL /$ beat $\times 72\; bpm$
  • C
    Stroke volume $\times$ Heart rate $=80\; mL /$ beat $\times 72\; bpm$
  • D
    Stroke volume $\times$ Heart rate $=90\; mL /$ beat $\times 72\; bpm$
✓

Answer

Correct option: B.
Stroke volume $\times$ Heart rate $=70\; mL /$ beat $\times 72\; bpm$
b
Stroke volume $=70\; mL / beat$
Heart rate $=72$ beat/minute

Cardiac output $=$ Stroke volume $\times$ Heart rate

$70 \times 72=5040\; mL /$ minute or approximately $5\; L / min$

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