Shuchi Sharma

Body

Body

Bod

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Everybody has a skeleton. It is made up of a lot of bones. The skeleton gives your body the structure it has,lets you move in several ways, and protects your internal organs.

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The skeletal system has 206 bones. When you are little you have 350 bones but as you grow some of your bones join together to make one bone. There are four general categories of bones. Long bones, flat bones, short bones, and irregular bones. The skeletal system has three major jobs. It protects our vital organs such as the brain, the heart, and the lungs. It gives us the shape we have and it allows ourselves to move.

Healthy Hints

Exercise Regularly

Eat Dairy Foods for Calcium

Play Carefully

Sit Up Straight

There are more than 600 muscles in our body. The muscular system consist of three different types of muscle tissues : skeletal, cardiac, and smooth. Muscles help you move. The muscles are attached to the skeleton, which provides the pulling power for us to move around. The different types of muscle tissues have the ability to contract, which then allows body movements and functions. The main job of the muscular system is to provide movement for the body. Muscles help in pumping blood all over your body, to carrying your heavy backpack.

Muscles are divided into two other groups according to their functions, the involuntary muscles, and the voluntary muscles. The muscles which we can control are called voluntary muscles. The ones we can not control are involuntary. The heart, is an example of involuntary muscle. Your hands are examples of voluntary muscles.

Healthy Hints

Exercise Regularly

Healthy eating

http://library.thinkquest.org/10348/find/content/muscular.html

You would be surprised to know that it is the skin, which anyone might not think as an organ. No matter what you think of it, your skin is very important. Your skin covers and protects everything inside your body. Without skin, your muscles, bones, and organs would be hanging out all over the place. Skin holds everything together.

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The skin is the largest organ of the body. It weighs about 8 pounds. It covers 22 square feet. Our skin is composed of a complex system of cell layers, nerves, and glands. It protects us and connects us to the outside world.

Healthy Hints

Avoid Sunburns

Put On Sunscreen

Largest Organ!

http://images.google.com/imgres?imgurl=http://www.evolutionarymodel.com/Skin.jpg&imgrefurl=http://www.evolutionarymodel.com/apps/photos/photo%3Fphotoid%3D56959375&usg=__HjmJMaBIbYab1Fc2MycFRIWZQPY=&h=407&w=396&sz=64&hl=en&start=17&um=1&tbnid=fMBXhj-fxJjRQM:&tbnh=125&tbnw=122&prev=/images%3Fq%3Dskin%2Bdiagram%26hl%3Den%26client%3Dsafari%26rls%3Den%26sa%3DX%26um%3D1

The brain controls everything. It sends messages to the rest of your body. From moving your hand, to pumping blood from your heart to the rest of your body. It’s like the boss of your body. It controls everything even when you’re asleep. Not bad for something that looks like a big, wrinkly, gray sponge. Your brain has several different parts that work together. These five parts are the cerebrum, the cerebellum, the brain stem, the pituitary gland, and the hypothalamus.

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The nervous system is a very complex system in the body. It is divided into two main parts. The central nervous system (CNS) and the peripheral nervous system. The spinal cord and the brain make up the CNS. The main job of the CNS is to get the information from the body and send out instructions. The peripheral nervous system is made up of all of the nerves and the wiring. This system sends the messages from the brain to the rest of the body.

Healthy Hint

Sleep Well

Mental Exercises

http://upload.wikimedia.org/wikipedia/commons/b/ba/Nervous_system_diagram.png

Messages!

Really Quick!

Even before you eat, when you smell a tasty food, see it, or think about it, digestion begins. Saliva begins to form in your mouth. When you do eat, the saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow. Your tongue helps out, pushing the food around while you chew with your teeth. When you're ready to swallow, the tongue pushes a little bit of mashed-up food called bolus toward the opening of your esophagus, the second part of the digestive tract.

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The digestive system includes the mouth, the esophagus, the liver, the pancreas, the stomach, the large intestine, the small intestine, the gall bladder, and the rectum. The digestive system breaks down and handles food.

Healthy Hints

DON’T Over Eat

Eat a Balanced Diet

http://kidshealth.org/kid/htbw/digestive_system.html#

Food!

The system is made up of the vessels and muscles that help and control the flow of the blood circle the body. This process is called circulation. The main parts of this system are the heart, arteries, capillaries and veins.

Healthy HintsGet aerobic exercise

http://library.thinkquest.org/5777/cir1.htm

As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The blood leaving the aorta is full of oxygen. Oxygen is important for the cells in the brain and the body to do their work. The oxygen rich blood travels throughout the body. On its way back to the heart, the blood travels through a system of veins. As it reaches the lungs, the carbon dioxide is removed from the blood and replace with fresh oxygen that we have inhaled through the lungs.

Blood!

Humans need oxygen to live. You get oxygen from the air. Without oxygen we cannot survive for more than a couple minutes. Breathing occurs automatically, you do not have to think about it. You breathe in order to take oxygen into our bodies and get rid of carbon dioxide. Oxygen is carried in the blood to the body's cells. The air you breath out has hundred times more carbon dioxide than the air we breath in.

http://library.thinkquest.org/5777/resp1.htm

The respiratory system is made up of the trachea, the lungs, and the diaphragm. First, from the trachea you breathe in oxygen. Then, when you breathe in your lungs take the oxygen in and the oxygen goes in your blood to the rest of your body. Then when you breathe out your lungs release carbon dioxide into the air. Your diaphragm (a muscle) helps the lungs release the carbon dioxide by pushing against. It is located right beneath your lungs. It also separates your chest and your belly.

Healthy Hints

Don’t Smoke

Breathe In Breathe Out!

Your heart is a muscle. It's located a bit to the left of the middle of your chest. It's about the size of your fist. There are many muscles in your body. In your arms, in your legs, in your back, and in your behind.

http://kidshealth.org/kid/htbw/heart.html

There are four chambers in your heart. The right atrium, the left atrium, the left ventricle, and the right ventricle. Atria on both sides of the heart receive the incoming blood first. Then, the blood is sent down to the ventricles to be pumped out. The right side of the heart receives “oxygen-poor” blood. The left side of the heart receives “oxygen-rich” blood. The sound that comes from your heart is the sound of the valves opening and closing.

Healthy Hints

Get Aerobic Exercise

1. Involuntary Muscle- a muscle which you can’t control. Ex. Heart

2. Voluntary Muscle- a muscle which you can control. Ex. Hands and Legs

3. Bolus- mashed-up food