How do our muscles work?
Whether
we are running waking lifting an object or just getting up from a couch, a
number of muscles come into play. There are about 639 muscles of all shapes and
sizes in the different parts of our body. A medium sized muscles of the body 10
million cells. All the muscles of the body put together have almost 6,000
millions cells. Each of these muscle cells is like a motor. Containing ten
cylinders arranged in a row. The cylinders are tiny boxes that fountain fluid.
A muscle contracts when the brain sends a message to these tiny boxes. For a
fraction of second the fluid in the tiny box congeals and then returns to
normal. It is this action that causes the muscles to move. Muscles make up to
about 40% weight of the body.
Human Muscles Movements
From birth to death, these muscles form a very important
part of our life. They produce heat and help in the movement of food from one
place to another in the digestive system. They take the air to the lunges. If
they stop working all the factions of our body would come of halt. The
throbbing of the heart and the expansion and contraction of intestines would
also stop.
The muscles of our body are of three kinds striated of
voluntary smooth or involuntary and cardiac. Most of the muscles of the hands
legs neck and head are voluntary because al these limbs function according to
our wishes. Most of them are attached to nuns and are called skeletal muscles.
Striated mussels are made up of many fibers. Smooth or involuntary muscles are
those which functions on their functioning. The muscles of the stomach and
intestine are involuntary because the process of digestion contours on ties
own. These muscles help in blood circulation. The cardiac muscles are found in
the heart. They are also involuntary muscles. They cannot be controlled by our
will. It is most important muscle and is fibrous in structure. With the help of
his muscle the heart beats 2,500 millions times in a life span of 70 days.
Several
body parts such as brain, spinal cord and nerves are involved in the working of
muscles. A muscle is made up to of many tiny fibers that contract when they
receive a signal from the nerve. Muscles fibers either only a few of its fibers
contract the muscles contracts more powerfully when more of its fibers
contract. All muscles work by contraction.
.jpg)
