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The digestive system is made up of the Oral cavity, esophagus, stomach, small and large intestines, teeth, salivary glands, liver, and pancreas. The job of the digestive system is to take in nutrients and transfer them to our blood vessels. it functions by pre-digesting our food by the means of our mouth (oral cavity), and teeth, saliva is also added during this pre-digestion. Then, the food is sent down our esophagus into our stomach, where it is mixed in with acids which truly digest the food and make the nutrients easy to access by the intestines. The intestines then take the digested food and slowly absorb the nutrients into the blood until no more nutrients can be extracted. Once this occurs, the food waste is excreted as feces.

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The endocrine system is made up of the pituitary, thymus, thyroid, parathyroid, adrenal, ovaries, testes, and pancreas. The main job of the endocrine system is to communicate with the body fairly slowly to create major changes. all the glands part of the endocrine system release chemicals that alter your body chemistry, such as your pancreas, which creates insulin and Adrenalin. Your testes produce testosterone and essentially initiates puberty. all in all, the endocrine is the system that the body uses to cuase major changes and thus adaption to our mental and physical state.

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The circulatory system is made up of the heart, blood vessels, and blood. The job of the circulatory system is deliver vital nutrients, supply oxygen and remove waste products from all the cells in your body. This is done by having your lungs and kidneys filter out blood, which is then pumped via your heart all over your body giving and taking in nutrients and waste via your intestines and other waste organs (lungs, kidneys, etc.).

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The respiratory system is made up of the Nasal passages, pharynx, larynx, trachea, bronchi, and lungs. The job of the respiratory system is to get rid of waste (CO2) and take in oxygen. The respiratory system does this by taking in air through the mouth or nose by expanding the lungs by creating a negative pressure in the lungs via the diaphragm, then the air is channeled into the pharynx which sends the air to the larynx and trachea rather then the esophagus, which then flows the bronchi which fills both lungs with air, the lungs take in oxygen and release carbon dioxide, and then the air flows out of the body the same way it came in.

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The nervous system is made up of your brain, spinal cord, and nerves. The function of the nervous system is to quickly take in information from the environment and adapt to this information. For example: touching a hot stove and flinching was an action done by your nervous system to keep you from getting burned worse. generally, the order of operations of your nervous system is; nerves take sensory information to spinal cord, spinal cord takes all the information given to it to the brain, brain processes sensory information and comes up with an action, action is sent down the spine, spine gives the action to the correct nerve, and the nerve finally transmits the action to the organ the action was meant for, say your leg muscle.

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The skeletal system is made up of all the bones in your body and other supporting material such as cartilage. The main function of the skeletal system is to give your body shape and protect your vital organs. The skeletal system works very closely with the muscular system as most of the muscles in your body are attached to some sort of bone.

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Excretion Is Not Elimination. (n.d.). Retrieved April 18, 2016, from http://www.biology4kids.com/files/systems_excretory.html

Organ System Overview. (2013, Fall). Retrieved April 18, 2016, from http://www.public.asu.edu/~thoffman/fall2013/bio201/ManualExercise2.pdf

Organ Systems. (n.d.). Retrieved April 18, 2016, from http://sciencenetlinks.com/student-teacher-sheets/organ-systems/

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The muscular system is basically made up of all the muscles in your body. Although there are several different types of muscles in your body, they all do the same thing; contract and expand to create motion and sometimes locomotion to move you around. They also provide an important role in maintaining an even internal body temperature by moving and thus causing friction and heat. This is why you shiver in the cold!