INSIDE KNOWLEDGE
....A heart?
Your body's engine, the heart pumps blood to every cell in your body.
.... Blood?
A mix of special cells and liquid "plasma" blood delivers all the good stuff(oxygen vitamins minerals and chemicals called hormones) to the cells in your body and carries away all the bad stuff (carbon dioxide and other waste) for disposal red blood cells transport oxygen, while white blood cells fight infection and special cells called platelets seal the leak when blood vessels break-a process called clotting. An oxygen carrying protein called hemoglobin is what gives it's red color.
....Lungs?
Each breath you inhale fills these balloon like organs with oxygen, which is absorbed into your blood each exhalation expels carbon dioxide waste from your blood.
....Skin?
Skin holds your insides in and protects your tissues from ultra violet radiation from the outside, skin is your body's largest organ, it is made of layers of cells that march to the surface and flake off from friction, the outermost layer is entirely dead.
....Tonsils?
These two meatball shaped masses of tissues at the back of your throat are apart of your lymph system, which includes a network of nodes that work like little security guards to battle infection .
....an Appendix?
This skinny tube in our digestive system is mostly useless today and can actually endanger your life if it becomes inflamed, scientists suspect that the appendix ,which replenishes essential bacteria in our guys, was an important organ back before germ fighting medicines helped humans overcome constant bouts of diarrhea.
....a Stomach?
This expandable organs stores every thing you eat and starts breaking down food with powerful acids
....Intestines?
The bulk of food digestion takes place in your small and large intestines ,two tubes that absorb all the vitamins, minerals, and other nutrients from everything you eat..
....a Liver?
Your body's biggest internal organ, the liver is like a complex chemicals processing plant, it converts nutrients from the small intestine into fuel your body can use ,It makes bile, an essential substance for digestion ,It cleans your blood of toxins and removes damaged red blood cells.
....Kidneys?
This bean-shaped organ is so essential to good health that your body comes with a second one for free! Each kidney is crammed with more than a million microscopic filters called 'nephrons' that skim the waste chemicals and other gunk from your blood. 
....a Pancreas?
This organ injects special protein substances called enzymes into your small intestine to break down carbohydrates for fats and energy and proteins for body-building materials. The Pancreas also creates a crucial hormone called insulin, which regulates the level of sugar in your bloodstream. 
...a Skeleton?
Remove all your bones along with the joints and muscles pinned to them and you'd end up a shape less, motionless bag of blood and organs. Your skull and spinal vertebrae, made of tough deposits of calcium and other minerals, are like armor for your brain and nervous system, special bone marrow In your body's blood factory, your muscles and joints, meanwhile,set your humans machine in motion.
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