Function of the heart and pulse rate

Play the role of pumping of the heart, send the blood to various parts of the body, and is the channel of the circulation of the blood and blood vessels.


The pumping function of the heart is not a haphazard operation, but by acertain rhythm of repeated systolic and diastolic. Responsible formaintaining a regular rhythm of the heart nerve known as vegetative, isdivided into the sympathetic and parasympathetic nervous


Sympathetic roles is to make the contraction and relaxation of the heart‘srhythm to accelerate, and parasympathetic reduction carried out andcoordinated in order to maintain the two heart operations.


Rhythm of contraction and relaxation of the heart is divided into systolic,diastolic, and Jin General called the cardiac cycle. 60-70 cycles per minuteadult men, adult female 70-80 cycles per minute.


Cardiac output blood flow varies depending on the State of the body, whilethe body is at rest, about 5 litres per minute.


Each contraction of the heart 1 (1 cycle) the outputs of blood volume, 60~80ml, and wave to convey to blood vessels, but flexible blood vessels alsohave temporary expansion. When volatility through the blood vessels, thevessels will revert to the original state.


In other words, the blood vessels are according to the rhythm of the heart(pulse), and expansion and contraction.


The vasomotor is blood to blood vessels changes in blood pressure, it will be as the heart beats, rise or fall according to a rhythm.


This a certain rhythm of blood pressure and pulse pressure. If in vitro withfinger touch pulse pressure is called pulse.