The force of the blood against the walls of the blood vessels is known as blood pressure.It depends on several factors such as ,blood volume,blood vessel space,force of the heart beat,and blood viscosity,etc.Blood pressure varies considerably in different parts of the circulatory system.The maximum pressure is encountered in the arota where it normally reaches to 140 mm of mercury.Then it gradually decreases in the arteries and arteriols,becoming lower in the capillaries and still lower in the veins.
The arterial blood pressure undergoes a rhythmic change reaching a maximum during ventricular systole when blood is pumped into the arteries and decreasing during ventricular diastole. The former is called systolic pressure and the latter,the diastolic pressure.
Yes, blood pressure occures in youngre ones quite often caused mainly by extream stress resulting from pressure of work,overweight,obesity,alcoholism,excessive intake of salt and consumption of tobacco.
High blood pressure usually leads to brain hemorrhage,heart attack, paralysis and kideny failure.
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