Ventricular contraction generates the fluid pressure, called blood pressure, that forces blood through the pulmonary and systemic circuits. More specifically, blood pressure is the force the blood exerts against the inner walls of blood vessels.
Measurement
Before the measurement we known the types of blood pressure that are given below.
Systolic pressure
The maximum pressure achieved during ventricular contraction is called the systolic pressure.
Diastolic pressure
When the ventricles relax the pressure of arterial decrease, and remain pressure that exit in the arteries is called the diastolic pressure.
In humans, normal systolic pressure for a young adult is about 120 mm Hg, which is the amount of pressure required to make a column of mercury (Hg) in a sphygmomanometer rise 120 mm. Diastolic pressure is approximately 80 mm Hg. Conventionally, these readings are expressed as 120/80.
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