Muscular+System+-+5th+Period

Muscles are made for you to move. Without muscles, you wouldn't be able to work the way you do. You couldn't run or walk or even lift a finger. The muscular system is a group of elastic tissues and small fibers.They are found in every part of the body. There are different muscles for different jobs. Some are controllable while others aren't like your heart. Did you know that there are over 600 different muscles in the human body? There are three types of muscles: smooth muscles, cardiac muscles and skeletal muscles. Below is a picture of the muscular system.
 * __The Muscular System__**

media type="custom" key="11818056" Smooth muscles are muscles that are uncontrollable. An example for this type of muscle are your eyes.You blink without even paying attention. In fact, your eye muscles are the hardest working muscle that you have. Smooth muscles work without you knowing. "Smooth muscles are arranged in layers with the fibers in each layer running in a different direction." (sentence recieved from [|www.library.thinkquest.org/5777/mus4.htm]) Smooth muscles are usually formed in layers because their formed with one behind the other. Most smooth muscles are found in your internal organs, such as your bladder, digestive system, or blood vessels. A few examples of how smooth muscles work is that they help your body digest food, and help you hold in wastes until you're able to go to the bathroom. media type="custom" key="11622094" There is only one cardiac muscle - it's your heart. It helps you heart pump blood through your body. Your heart is an involuntary muscle. That means that you can't control it. Your heart beats about 100,000 times a day. The cardiac muscle never gets tired. The only way your cardiac muscle will stop is when you die.
 * __S__****__mooth Muscles__**
 * __Cardiac Muscles__**

media type="custom" key="11781470" Skeletal muscles are attatched to your bone by tendons, which are made of tough tissue. It would probably be very painful if we didn't have any. Skeletal muscles are voluntary. Voluntary muscles are the ones you can control. They don't move on their own. For example if you chose to pick up the phone you are moving by choice. media type="custom" key="11793784"
 * __Skeletal Muscles__**

__**Our Top 5 Reasons Why Your Muscular System is Important**__ 1.) Without muscles, you couldn't move! If we didn't have them, we most likely wouldn't be here right now. 2.) Muscles help your lungs expand and contrast. Muscles help you breathe and keep oxygen flowing through your body. 3.) Even though your heart is involuntary, it is still a muscle. Your heart pumps blood through your body that is needed to keep your cells and other organs working properly. 4.) Blinking is caused by involuntary eye muscles. Blinking is important because it keeps your eyes moisturized. If we didn't have them, your eyes would be super dry by now! 5.) Did you know that muscles help keep your eyes focused? You would pretty much be blind without them!

Works Cited Fitness, I. Dig. //IDIGFITNESS.COM//. Web. 12 Dec. 2011. . "Muscular System." //CLC Charter School//. Web. 12 Dec. 2011. . "The Muscular System." //Science Experiments, Videos, and Science Fair Ideas at Sciencebob.com//. Web. 12 Dec. 2011. . "The Muscular System." //The Human Body//. Web. 12 Dec. 2011. . "Muscular System." //ThinkQuest//. Web. 12 Dec. 2011. . "Muscular System." Web. "Smooth Mucsles." //Library.thinkquest.org//. Web. "Your Muscles." //KidsHealth - the Web's Most Visited Site about Children's Health//. Web. 12 Dec. 2011. [|http://www.kidshealth.org]. //EasyBib: Free Bibliography Maker - MLA, APA, Chicago Citation Styles//. Web. 12 Dec. 2011. .
 * __Bibliography__**