Using the figure below (Fig. 14.18 from your text), calculate the following values:





A) Heart rate

B) Stroke volume

C) Cardiac output

D) Mean Arterial PressureWhat will be an ideal response?


A) (1 cycle/800 msec) × (1000 msec/sec) × (60 sec/min) = 60,000 cycles/800 min
= 75 cycles (or beats)/min
B) Stroke volume = EDV - ESV = 135 mL - 65 mL = 70 mL/beat
C) Cardiac output = HR × SV = 75 beats/min x 70 mL/beat = 5250 mL/min or 5.25 L/min
D) Mean Arterial Pressure = (DP +DP + SP)/3 = (85 + 85 + 120)/3 = 290/3 = 96.7 mm Hg
or
MAP = DP + 1/3 (SP-DP) = 85 + 1/3 (120-85) = 85 + 1/3 (35) = 85 + 11.7 = 96.7 mm Hg

Anatomy & Physiology

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