The normal systolic and diastolic pressure in humans is _________ respectively?A150 and 75 mm of HgB140 and 90 mm of HgC120 and 80 mm of HgD100 and 60 mm of HgAnswer: C. 120 and 80 mm of Hg Read Explanation: The normal systolic blood pressure is 120 mm of Hg, and the normal diastolic blood pressure is 80 mm of Hg. Blood pressures are written as two numbers separated by a slash like this: 120/80 mm Hg. You can say this as “120 over 80 millimeters of mercury” or just as “120 over 80.” The first number is your systolic pressure that’s the force of the blood flow when blood is pumped out of the heart. The second number is your diastolic pressure, which is measured between heartbeats when the heart is filling with blood. Read more in App