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Homework Help: Muscular System

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❶There is no common agreement on exact number of muscles in human body as some of the muscles are grouped by different scholars and experts in different ways.

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For all of these reasons, the muscular system is vital. There are three types of muscles. Cardiac muscles are found in the heart. Smooth muscles involuntary are controlled by the autonomic nervous system. Skeletal muscles are attached to bones and allow us to move. Muscular system in human body moves the body and enables many body organs to perform their functions.

Without muscles the body will not be able to carry out most of its normal processes such as circulation of blood, breathing, and digesting the food. Also the body will not be able to move. In this way a person cannot continue to live without the contribution of muscular system in functioning of his or her body. The muscular system in human body consists of more than muscles.

There is no common agreement on exact number of muscles in human body as some of the muscles are grouped by different scholars and experts in different ways. Each of the muscle consists to groups of fibres that are capable of contracting to exert the force required for movement and for exerting force. When a muscle contracts it pulls the parts of the body to which it is attached causing it to move. Muscles of human body are divided in two main groups called skeletal muscles and smooth muscles.

In addition a third kind of muscle group called cardiac muscles is present only in heart, and has characteristics of both skeletal and smooth muscles. Skeletal muscles are attached to the bones of the skeleton and are responsible for moving various bones of the skeleton including parts such as fingers, arms and legs. We are able to consciously control the movement of skeletal muscles. For example smooth muscles in the walls of the stomach and intestines move food through the digestive system.

Similarly smooth muscles also control the width of the blood vessels and the size of the breathing passages. Smooth muscles function by contracting and relaxing involuntarily. We do not make conscious effort to make these muscles work. Therefore the smooth muscles are also called involuntary muscles. It is important to note that in the process of moving various part of the body the muscles do consume energy and produce heat, but that is not a direct function of muscles.

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This homework help resource uses simple and fun videos that are about five minutes long. How it works: Identify which concepts are covered on your muscular system homework.

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The Muscular System moves the body, gives it posture and circulates the blood. It is made up of three types of muscles: skeletal, smooth & cardiac muscles. It is made up of three types of muscles: skeletal, smooth & cardiac muscles.

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