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the smooth muscles are non striated,we have smooth muscles in many areas of the body,especially in the wall of digestive system organs.
Involuntary Muscle Immerse yourself medical language, page 431: "Smooth muscles are involuntary, nonstriated muscles."
One example of involuntary muscles would be in the digestive system, where muscles in the stomach churn food.
We have about 200+ bones in our body, but each bone must be controlled by several muscles. And some muscles do not control bones, for example the facial muscles and the eye muscles. So there are more muscles than bones.
The thenar muscles, which are located at the base of the thumb, are an example of short muscles. The human body contains three types of muscles.
They are spindle shaped and nonstriated with a single, central nucleus.
Some muscles are classified according to the action they perform. These include flexor and extensor muscles, for example, to indicate whether the muscle flexes or extends.
The biceps is an example of a voluntary muscle.
The Tongue.
The only way to control your muscles is by using the nervous system. Some are voluntary muscles which means you have to think to make them move others are involuntary muscles and work without your thoughts. For example: your digestive tract, your breathing (but you can interfere at times with this one) and your heart.
The only muscle in the body that is non-striated is the smooth muscle. It does not have any visible striations.
The triceps are extensor muscles.