What is the normal systolic and diastolic blood pressure in a healthy human adult ?
120 mm Hg / 80 mm Hg
Systolic pressure is the pressure of blood in the arteries when the ventricles contract, and diastolic pressure is the pressure when the ventricles relax.
In a healthy adult the normal systolic pressure is about 120 mm Hg and the normal diastolic pressure is about 80 mm Hg, and blood pressure is always written as systolic over diastolic.
Writing 80 over 120 reverses the two values, while 140/90 indicates high blood pressure and 100/60 is on the low side.
Hence, 120 mm Hg / 80 mm Hg.
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