The reasoning: read the diagram vertically, valves follow pressure
Cycle length = 60/HR. At 75/min, 0.8 s ≈ 0.27–0.3 s systole + ≈ 0.5 s diastole. Tachycardia shortens diastole disproportionately.
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Part 5 · Cardiovascular Physiology
Same concept, other depth: Foundation →
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Cycle length = 60/HR. At 75/min, 0.8 s ≈ 0.27–0.3 s systole + ≈ 0.5 s diastole. Tachycardia shortens diastole disproportionately.
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