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Muscles

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Bones
Bone Formation
Efficiency
Genetic Disorders
Malfunctions
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Muscles
Efficiency
Genetic Disorders
Malfunctions
Muscle Cell
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Fun Facts
Work Cited

Muscular System

There are three different types of muscles, skeletal, smooth and cardiac. Muscles are attached to the bones by tendons and are made of proteins. Skeletal muscles are usually attached to the bones and responsible for voluntary movements.  Smooth muscles are not under voluntary control, have one nucleus, are spindle shaped, and are not striated.  They are found in the stomach, blood vessels, and intestines.  They are the muscles that move food through the digestive tract.  They also control blood flow through the circulatory system. An interesting fact about smooth muscles is that they are the muscles that decrease your pupil size in light.  Smooth muscles are connected by gap junctions; these gap junctions allow electrical impulse3s from one muscle cell to another. Cardiac muscle is found in the heart and it contracts to pump blood through the circulatory system.

2006 Aislinn, Ariel & Amanda