This lesson will give an overview of disorders of the muscular system by looking at:
A muscle strain is when a muscle fiber tears or is stretched too far. If a tear is small, it can be very minor and will heal quickly on its own. If the tear is complete, the muscle might lose some of its functionality.
Muscle spasm is an involuntary contraction of itself, and a cramp is a muscle spasm that does not immediately release.
Have you've ever had something called a charley horse before? If you have, then you have experienced a muscle cramp or a spasm that doesn't immediately release.
Muscular dystrophy is when skeletal muscles break down and become weakened.
Two types of muscular dystrophy are:
Tetanus is when muscles experience continual contractions, which can lead to death if the paralysis reaches the person's heart. This disorder is also known as to as lockjaw. A bacterial toxin inhibits your nervous system signals to the muscular system. The nervous system and your muscular system will not be properly communicating, which causes those continual contradictions and can lead to death; this can be vaccinated against
The wasting away of muscle tissue is called atrophy. Often time those who experience this disorder are people on bed rest due to an illness or injury. Muscles will start to waste away over time without use, but, if that person is off of bed rest or able to get up and start using their muscles again, they can actually reverse this disorder.
There are many different disorders of the muscular system, and can have a large range in the severity of a disorder like with a strain: a small tear is something that will heal, but a complete tear may permanently affect functionality. Some disorders are severe enough that they can cause death such as DMD or tetanus. On the other hand there are some disorders it is possible to make a complete recovery from like muscle atrophy or muscle spasms or cramps, which are related to a lack of potassium.
Keep up the learning and have a great day!
Source: Source: THIS WORK IS ADAPTED FROM SOPHIA AUTHOR AMANDA SODERLIND
Muscle fiber tears or stretches too far.
An involuntary muscle contraction often caused by potassium deficiencies.
A genetic disorder that causes the gradual breakdown of muscle fibers.
A disease caused by microbes that causes muscles to continually spasm.
The wasting away of muscle tissue leading to very weak muscles.