The phase of the heart beat when the heart contracts and pumps the cable into arteries is called systole. And the phase of heart beat when the heart relaxes (or expands) and allows the chambers to receive with blood is called diastole.
The maximum pressure, at which the blood leaves the heart through with(predicate) the main artery (aorta) during contraction phase, is called the systolic pressure. This high pressure in the main artery maintains a steady meld of blood in all the arteries towards the capillaries.
The minimum pressure in the arteries during the relaxation phase of heart is called the diastolic pressure. The value of diastolic pressure is always lower than that of the systolic pressure. The blood pressure of a person is expressed in terms of millimetres of hydrargyrum (which is written as mm Hg).
The normal blood pressure values are:
Systolic pressure: 120 mm Hg Diastolic pressure: 80 mm Hg
This is unremarkably written as 120/80
The blood pressure values start out from person to person and from time to time. They also vary with historic period. For example, a young person may have blood pressure of 110/75 but at the age of 60 years it could be 145/90. High blood pressure is called hypertension. High blood pressure is caused by the compactness (narrowing) of very small arteries (called arterioles) which results in increased resistance to blood flow. Very high blood pressure can legislate to rupture of an artery and internal bleeding.
How to Measure Blood wardrobe:
Blood pressure is measured by using an creature called sphygmomanometer. Two readings of blood pressure are taken: systolic pressure (when the heart is contracting and pumping out blood), and diastolic pressure...If you essential to get a full essay, order it on our website: Ordercustompaper.com
If you want to get a full essay, wisit our page: write my paper
No comments:
Post a Comment