Muscle

Everyone even children know that we have muscles. Every single motion that we do, we use muscles. Each and everything that we do from the housework to the simplest form of breathing, muscles take part in all of them. I can't really tell you what muscles involve in the activities because there are several muscles that involve in a single action. For example we swim by coordinate between hand and leg and also even before we realise what are the muscles involve in particular action we should know that there had been 639 skeletal muscles found in human body. 

When people talk about abs, big arms and chest, these are... No different than what we have in our body and the only different is, their muscles are bigger, better developed or in simple words, theirs are worked out more and heavier. Before we go into each muscle, let’s learn how muscles work.

The origin and insertion locations of muscles are attached to the skeleton and they move the body by contracting in response to signals from the central nervous system, the contraction is achieved by the sliding of thin filaments. When skeletal muscle contract they either move parts of the body via their attachments to bones, or produce tension to oppose stretch or even to allow controlled lengthening.  A motion or action of muscle is then produced. Several muscles involve in a single motion. Agonist – antagonist relationship explain this at best. The agonist is the muscle which (shortens) performs the primary action and the antagonist is the muscle which (lengthens) opposes it.

 

Muscles that involve a lot in daily and sport activities are the large muscle groups, the upper body like shoulder, pectoral (chest), trapezius muscle and latissimus dorsi (back muscles), biceps and triceps (hand muscles), abdominal and lower body like quadriceps, gluteal muscles (buttock) and hamstrings (muscle between butt and leg).

The anatomy of human muscles:

Source: Google

However, there are  myths regarding the relationship between size of the muscles and physical strength. Just to sum up, training and workouts are capable of contribute muscle mass gain and strength gain. However, you do see where athletes like gymnast has a smaller size but terrific strength. So it is true that the higher muscle mass gain will contribute to strength gain, BUT be aware that the strength gain may not necessary always contribute to the muscle gain. So someone that is smaller not necessary the weaker.


Read more about muscles by follow the "Muscles" tag.


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