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The origin of the term leads us to the word latin pressĭo. This concept refers to the action and the effect of the compress or squeeze; coercion or the tax that is applied to a person. to the physical quantity that indicates the force exerted by a body on a surface.
Blood, on the other, expressed regards to the arteries, where blood (red liquid that flows through the veins, arteries and capillaries to carry oxygen and nutrients to the cells).
Blood pressure, therefore, is the force that blood exerts on the walls of the vessels. The concept is related to blood pressure and venous pressure, and is considered to be one of the most important vital signs.
Blood pressure is the force exerted by the blood flowing through the arteries. However, the term is often used in reference to the pressure of the blood in general. Blood pressure can be divided into systolic pressure and diastolic pressure.
Venous pressure, in turn, indicates the force exerted by the blood flowing in the veins. Means central venous pressure on the vena cava blood pressure higher.
It is worth mentioning that the blood pressure varies depending on the part of the body. Inside the aorta, which receives blood pumped by the heart in a constant way, mean pressure is 100 mm Hg while it reduces almost to 0 at the end of the vena cava.