How our bodies skeleton and muscles work?

November 12, 2012

How our bodies skeleton and muscles work?

Without muscles and bones we would be very similar in form to jelly fish. Jumping, walking, talking or just lazing around would be beyond our capabilities. Here are a few interesting points about our framework.

The jawbone is the hardest bone in the body. Maybe this is why boxers tend to be knocked out rather than get broken bones. And another interesting fact is that bone is stronger than steel when compared weight wise. Steel can be made much stronger than bone, however not when the weight is limited to the weight of a similar bone.

Give us a smile! You use a lot less energy that way. To smile requires the use of 17 facial muscles but it takes 43 muscles to produce a frown. So if you are Mister Grumpy it’s possible that you have the strongest face in the world after continually working out all of those muscles.

And to go with your strongest face why don’t you stick out your tongue. That’s the most powerful muscle in the body, again pound for pound. Don’t try to do push ups with it but it does get regular exercise everyday, just by eating, swallowing, talking and involuntary movements around the mouth.

While we are moving from one place to another we employ about 200 muscles with every step we take. Now you understand why long distance runners are so fit, giving that number of muscles a workout with every training session. And if we take a lazy turn the muscles that we have developed will take twice as long to disappear than it took for them to develop.

Most people are around one inch or two and a half centimeters taller first thing in the morning compared to bedtime. This is because the cartilage, which acts as a cushion between our bones, gradually becomes compressed throughout the day just by standing, moving, sitting and general everyday life. A more dramatic example is when a pilot has to eject from the aircraft, between one and two inches are lost from that person’s height because of the downward force on the body. Most of the cartilage returns to normal after time, but it never quite returns to its previous level of elasticity.

Adults have about 206 bones, however as babies they started with 300. Some smaller bones fuse together as part of our normal growth process. The most common example is seen in babies’ skulls where it has not fully hardened in one unit. This allows for an easier birth and then the skull and other bones fuse together over time.

The one area which has the highest percentage of bones is our feet. With about 25% of all the bones in our body, that’s 52 bones, it’s no wonder that we always hear of some sportsman or woman breaking something in their foot.

Although the body is good at healing and repairing itself there is one area where it cannot regenerate or rejuvenate itself. The tooth cannot be repaired by the body, it takes a dentist. The reason for this is because the outer layer of a tooth is inert, it’s enamel.

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