Muscular System
Muscular SystemDo you think muscles are important? Do you have an idea of what they are made of? Well, here is some food for thought: your muscles make up forty percent of your body weight. If you like that interesting fact maybe you’ll learn some more.
The muscular system has three main types of muscles. These are: smooth, skeletal and cardiac muscles. Your smooth muscles are what line most hollow organs and these are involuntary muscles. If you are wondering what involuntary muscles are, these muscles automatically move without having to think about it. Some examples of smooth muscles are your stomach, intestines and bladder. Skeletal muscles are muscles that are connected to your limbs and all of your other bones. These muscles are voluntary. Voluntary muscles are the direct opposite of involuntary muscles, meaning you have to think to move them. A few examples of skeletal muscles are your biceps, triceps and quadriceps. Cardiac muscles are like skeletal muscles, but like smooth muscles, they are controlled involuntarily. These muscles form the thick walls of the heart. An example of a cardiac muscle is your heart.
Some functions of muscles are pushing, pulling and moving. Pushing and pulling take the same muscles. These...
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