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Name:
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MythBuster
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Subject:
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Some useless bits of trivia...
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Date:
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12/30/2007 2:42:50 AM
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Humphrey Bogart never said, " Play it again Sam" in Casablanca: TRUE
The earthworm has 5 hearts: TRUE
A donkey will sink in quick sand , but a mule won't:
The tongue is the strongest muscle in the body: FALSE. Long-winded explanation: Since three factors affect muscular strength simultaneously and muscles never work individually, it is unrealistic to compare strength in individual muscles, and state that one is the "strongest". Accordingly, no one muscle can be named 'the strongest', but below are several muscles whose strength is noteworthy for different reasons.
* In ordinary parlance, muscular "strength" usually refers to the ability to exert a force on an external object—for example, lifting a weight. By this definition, the masseter or jaw muscle is the strongest. The 1992 Guinness Book of Records records the achievement of a bite strength of 4337 N (975 lbf) for 2 seconds. What distinguishes the masseter is not anything special about the muscle itself, but its advantage in working against a much shorter lever arm than other muscles.
* If "strength" refers to the force exerted by the muscle itself, e.g., on the place where it inserts into a bone, then the strongest muscles are those with the largest cross-sectional area. This is because the tension exerted by an individual skeletal muscle fiber does not vary much. Each fiber can exert a force on the order of 0.3 micronewton. By this definition, the strongest muscle of the body is usually said to be the quadriceps femoris or the gluteus maximus.
* A shorter muscle will be stronger "pound for pound" (i.e., by weight) than a longer muscle. The myometrial layer of the uterus may be the strongest muscle by weight in the human body. At the time when an infant is delivered, the entire human uterus weighs about 1.1 kg (40 oz). During childbirth, the uterus exerts 100 to 400 N (25 to 100 lbf) of downward force with each contraction.
* The external muscles of the eye are conspicuously large and strong in relation to the small size and weight of the eyeball. It is frequently said that they are "the strongest muscles for the job they have to do" and are sometimes claimed to be "100 times stronger than they need to be." However, eye movements (particularly saccades used on facial scanning and reading) do require high speed movements, and eye muscles are 'exercised' nightly during Rapid eye movement.
* The unexplained statement that "the tongue is the strongest muscle in the body" appears frequently in lists of surprising facts, but it is difficult to find any definition of "strength" that would make this statement true. Note that the tongue consists of sixteen muscles, not one. One plausible explanation for this statement is that it originally referred to "tongue" as a metonymy for language, much like "The pen is mightier than the sword."
* The heart has a claim to being the muscle that performs the largest quantity of physical work in the course of a lifetime. Estimates of the power output of the human heart range from 1 to 5 watts. This is much less than the maximum power output of other muscles; for example, the quadriceps can produce over 100 watts, but only for a few minutes. The heart does its work continuously over an entire lifetime without pause, and thus does "outwork" other muscles. An output of one watt continuously for seventy years yields a total work output of two to three gigajoules.
Humans produce an average of 10,000 gallons of saliva in a lifetime: SOME DO, SOME DON'T. Explanation: The average human produces between 365 to 547 liters of saliva per year. For those on the upper end of that scale, that converts to 10,000 gallons in 69 years; perfectly reasonable. For those on the lower end, it converts to 10,000 gallons in 103 years: not unheard of, but not typical.
Reno Nevada is more west than Los Angeles Ca: TRUE (and further north that San Francisco.)
Windmills always turn counter-clockwise except for those in Ireland: Next time I'm in Ireland, I'll check it out, unless they learn how to build their windmills like the rest of the world before I get there.
For 2 billion years the amount of water on our planet has remained the same: Depends on who you ask; there are those who insist that the planet is only a few thousand years old. (And I don't want to disagree with them because they are crazy and might hurt me.)
There are 13,092 knives, forks, and spoons inn the White House: Only if they replaced the stuff that was stolen the last time a certain lakemartin.com member was there.
Car horns in the US beep in the tone of "F": Why not?
the middle finger nail grows the fastest: TRUE; the longer the finger, the faster the nail grows (unless you bite hem, in which case they hardly seem to grow at all.)
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