**Function**

For excellence of health, the left ventricular muscle must:

- (a) relax very rapidly after each contraction so as to fill rapidly with oxygenated blood flowing from the lung veins, i.e. diastolic relaxation and filling.

- (b) contract rapidly and forcibly to force the majority of this blood into the aorta, overcoming the much higher aortic pressure and the extra pressure required to stretch the aorta and other major arteries enough to expand and make room for the sudden increase in blood volume, i.e. systolic contraction and ejection.

- (c) be able to rapidly increase or decrease its pumping capacity under nervous system control.

Read more about this topic: Left Ventricle

### Other articles related to "functions, function":

... For instance, a sequence of

**functions**can frequently be constructed that approximate, in a suitable sense, the solution to a problem ... Then the integral of the solution

**function**should be the limit of the integrals of the approximations ... However, many

**functions**that can be obtained as limits are not Riemann integrable, and so such limit theorems do not hold with the Riemann integral ...

... In general, an integral over a set E of a

**function**f is written Here x need not be a real number, but can be another suitable quantity, for instance, a vector in R3 ... Just as the definite integral of a positive

**function**of one variable represents the area of the region between the graph of the

**function**and the x-axis, the double integral of a positive

**function**of two variables ... via the triple integral — the integral of a

**function**in three variables — of the constant

**function**f(x, y, z) = 1 over the above mentioned region between the surface and the plane.) If ...

... and integration are inverse operations if a continuous

**function**is first integrated and then differentiated, the original

**function**is retrieved ... of calculus, allows one to compute integrals by using an antiderivative of the

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### Famous quotes containing the word function:

“The press and politicians. A delicate relationship. Too close, and danger ensues. Too far apart and democracy itself cannot *function* without the essential exchange of information. Creative leaks, a discreet lunch, interchange in the Lobby, the art of the unattributable telephone call, late at night.”

—Howard Brenton (b. 1942)

“If the children and youth of a nation are afforded opportunity to develop their capacities to the fullest, if they are given the knowledge to understand the world and the wisdom to change it, then the prospects for the future are bright. In contrast, a society which neglects its children, however well it may *function* in other respects, risks eventual disorganization and demise.”

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““... The state’s one *function* is to give.

The bud must bloom till blowsy blown

Its petals loosen and are strown;

And that’s a fate it can’t evade

Unless ‘twould rather wilt than fade.””

—Robert Frost (1874–1963)