Question

What is the normal blood pressure of human beings?

Answer 1

Hint:Blood pressure comprise of two values-systolic and diastolic pressures. It is the pressure exerted by the blood flow on the arteries. It is measured by a sphygmomanometer. High and low blood pressure values can be very dangerous.

Complete answer:
To answer the question we must know about the blood pressure.
Blood pressure is the pressure exerted by the circulating blood against the walls of the blood vessels. The blood pressure is usually expressed in terms of diastolic and systolic pressure.
Systolic Blood pressure- It is the first number which indicates the pressure exerted by blood against the artery walls during heart beat.
Diastolic blood pressure- It is the second number which indicates the pressure exerted by blood against the artery walls during resting phase between the beats.
It is measured in terms of millimetres of mercury above the atmospheric pressure.

Blood pressure Range:

Significance of blood pressure value- It is one of the vital signs along with heart rate, respiratory rate, oxygen saturation and body temperature for determining a patient's health. Normal blood pressure of a human adult is 120/80mm of Hg.
Blood pressure is influenced by the cardiac output, emotional state, activity, disease, pregnancy, etc. It is regulated by the brain and endocrine.

Note: When the blood pressure is too high it is called hypertension and when low it is called hypotension. Long term hypertension can lead to diseases like heart diseases, kidney failure and even stroke. Hypertension leads to shortening life expectancy.