Review of the Human Body Systems. Created by Mrs. Wallace. Body Systems. Skeletal System Muscular System Circulatory System Digestive System Nervous System. The Skeletal System.
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What would happen if humans didn't have bones?You'd be floppy like a beanbag. Could you stand up? Forget it. Could you walk? No way. Without bones you'd be just a puddle of skin and guts on the floor.
How do my bones move?With a lot of help. You need muscles to pull on bones so that you can move. Along with muscles and joints, bones are responsible for you being able to move. Your muscles are attached to bones. When muscles contract, the bones to which they are attached act as levers and cause various body parts to move.
Muscles are the part of our body that allow us to move. They make up almost half of the weight of our bodies. They are made up of special tissues.When brain gives muscles a signal, those tissues can contract, or shorten. The muscles are attached to bones by tendons. Tendons pull on the bones and cause our limbs to move.
Smooth muscles are sometimes also called involuntary muscles and they are usually in sheets, or layers, with one layer of muscle behind the other. You can't control this type of muscle. Your brain and body tell these muscles what to do without you even thinking about it. You can't use your smooth muscles to make a muscle in your arm or jump into the air.
Skeletal muscles are voluntary muscles, which means you can control what they do. Your leg won't bend to kick the soccer ball unless you want it to.
Together, the skeletal muscles work with your bones to give your body power and strength. In most cases, a skeletal muscle is attached to one end of a bone. It stretches all the way across a joint (the place where two bones meet) and then attaches again to another bone.
Skeletal muscles are held to the bones with the help of tendons (say: ten-dunz). Tendons are cords made of tough tissue, and they work as special connector pieces between bone and muscle. The tendons are attached so well that when you contract one of your muscles, the tendon and bone move along with it.
Muscles of three types you'll find Skeletal, smooth, and the cardiac kind. Skeletal muscles come in pairs with the bones you’ll find them there
Workin’ together to make you strong, one gets short while the other long, like your arm when muscles flex, Biceps short and long triceps
Chorus: Your heart is a muscle too, Skeletal type working like a smooth, A specialized muscle called the cardiac, But your skeletal muscles go right up your back If you’ve ever navigated on the Erie Canal
Voluntary muscles all Striated, the skeletal Tendons at the bones connect With the joints so they can flex
Involuntary are the kind That move with no choice from your mind Like your stomach with muscles smooth And in the walls of blood vessels too
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Made up of the heart, blood and blood vessels, the circulatory system is your body's delivery system. Blood moving from the heart, delivers oxygen and nutrients to every part of the body. On the return trip, the blood picks up waste products so that your body can get rid of them.
Made up of your brain, your spinal cord, and an enormous network of nerves that thread throughout your body, it's the control center for your entire body. Your brain uses information it receives from your nerves to coordinate all of your actions and reactions. Without it, you couldn't exist!