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the process by which you body breaks down food into smaller nutrient molecules |
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Digestive Systems 3 main functions |
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-breaks down food -bloodstream absorbs food molecules and nutriance -eliminates waste |
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(chewing) when food is physically broken down |
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Uses chemicals to break down food (example - saliva) |
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the begining of the digestive system |
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connects the mouth and stomach |
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a series of muscel contractions that keep the food moving in one direction |
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Most mechanical digestion happens here |
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most chemical digestion and absorption of food molecules takes place here |
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produces chemicals used in chemical digestion |
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Stores Bile (breaks up fat) |
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produces chemicals that the small intestine uses to break down starches, protein, and fat |
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functions to absorb water into the body |
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Compresses waste materials that are to be eliminated through the anus |
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carries needed substances like Water, gluclose, oxygen, carbon dioxide and other nutriences away from cells |
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blood vessels that carry blood away from the heart |
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blood vesels that carry blood to the heart |
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moves oxygen into your body and carbon dioxide out |
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where oxygen and carbon dioxide are changed into energy |
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conect the trachea to the lungs |
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a muscle that draws air into the lungs |
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collects waste and removes it from the body |
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excretory organs that eliminate urine |
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tubes that connect the kindney to the bladder |
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a tube were the urine exits |
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a change in the enviorment that makes you react in some way |
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receives and reacts to information from the inside and outside of the body |
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Definition
special cells that carry information through the nervous system |
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consists of the brain and spinalcord |
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Peripheral nervous system |
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consists of all nervous outside of the centeral nervous system |
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The three main regions of the brain |
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Definition
-cerebellum -cerebrum -brainstem |
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-interprets info -controls movment of the skeletal muscels -carries out complex metal process |
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coordinates the actions of your muscles and helps you keep your balance |
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controls your bodies involuntary actions |
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controls voluntary actions |
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controls involuntary actions |
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-provides support -protects internal organs -produces blood cells |
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Muscular System (threee kinds of muscle) |
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-skeletal -smooth -cardiac |
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control involuntary actions |
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Involuntary, form the heart beat |
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