Organ System Presentation
Bry Witney

1. SKELETON MUSCLE; this muscle you can see and feel, it attaches to the skeleton and comes in pairs, this muscle helps your body move. the diagram below shows you the skeleton muscle. A muscle attaches on each side of a joint and when the muscle contracts or shortens, the joint moves. skeletal muscles are voluntary muscles, which means you can control what they do.

2. SMOOTH MUSCLE; this is found in your digestive system, bladder, and blood vessels etc. these muscles have the ability to stretch and maintain tension for long periods of time, the diagram below shows your the smooth muscle. in your stomach and digestive system, they contract and relax to allow food to make its journey through the body.

3. CARDIAC MUSCLE; there are two big features of this muscle, first is endurance, second is consistency, this is a twitch muscle, and contracts involuntarily. the diagram below shows you the cardiac muscle. just like the smooth muscle, cardiac muscle works all by itself with no help from you. a special group of cells within the heart are known as the pacemaker of the heart because it controls the heartbeat.

Interesting Facts
* muscles are made up of the same material, elastic tissue, kind of like a rubber band.

*muscles are responsibly for maintaining posture

*muscles make up about 40% of your total body weight

*the strongest muscle in your body is your masseters, also known as your tongue

*smiling takes 17 muscles in the face, while frowning takes 43

*it takes half as long to gain muscles then it does to lose them

*the smallest muscle is found in the middle of the ear

*to take one step, it takes 200 muscles

*your fingers don't have muscles in them, they are made up of tendons

*the muscles in your heart are the hardest working muscles in your body, they work 24 hours
*the longest muscle in your body is the sartorius muscle

*muscles are the "engine" that your body uses to propel itself

*absolutely everything that you conceive of with your brain is expressed as muscular motion

*your muscles allow you to do everything from allowing you to walk to keeping your blood flowing


this video below will show you how the muscular system works

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