The normal systolic pressure is and normal diastolic pressure is mm Hg.

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120

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110

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Solution

The correct option is C 80
Contracting phase of the heart is called systole and relaxing phase of the heart is called diastole. The pressure exerted by blood during the systolic phase is called systolic pressure and is 120 mm Hg whereas the pressure exerted during diastolic phase is called diastolic pressure and is 80 mm Hg.

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Question 116 (ii)

Health Application A doctor reports blood pressure in millimetres of mercury (mm Hg) as a ratio of systolic blood pressure to diastolic blood pressure (such as 140 over 80). Systolic pressure is measured when the heart beats and diastolic pressure is measured when it rests. Refer to the table of blood pressure ranges for adults.
Manohar is a healthy 37 yr old man whose blood pressure is in the normal category.
If Manohar's systolic blood pressure is 102 mm Hg, then use the ratio from part (a) to predict his diastolic blood pressure.

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