Circulatory System

No. Blood Pressure       
1. Normal systolic pressure is 120-130 mm of Hg.
2. Normal diastolic pressure is 70-90 mm of Hg.
3. During the ventricle contraction pressure is high. It is called systolic pressure.
4. Blood pressure is less during the ventricular relaxation. It is called diastolic pressure.
5. Normal blood pressure is 120/80.
6. Sphygmomanometer is an instrument used to measure blood pressure.