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human Body
| Term | Definition |
|---|---|
| tissue | a grop of similar cell that perform a specific |
| organ | a body strutre that is compsed of different kind of tissues that work together |
| organ system | a group of organs that work together to perform a major function |
| Gland | an organ that produces and releases chemicals either though ducts or into the bloodstream |
| hormone | 1 the chemical produced by an endocrine gland 2 A chemical that affects growth amd development |
| stress | the reaction of a person body to potentially threatening challening or disturbing events |
| interactions | the direct that one thing has on another |
| stable | resistant to sudden change |
| Digestion | the process by which your body breaks down food into small nutrient moleules |
| nutrients | the substances in food that provide the raw materials the body cell need to carry out all their essential processes |
| Absorption | the process by which nutrient molecules pass through starch that wall of the digestive system into the blood |
| carbohydrates | A engergy -rich organic compound such as sugar or starch that is made of the element carbon hydrogen and oxygen |
| peristalsis | waves of smooth muscle contraction that move food through |
| saliva | fluid released from glands in the mouth that play an important role in mechanical and chemical reaction in the body |
| Enzymes | proteins the speed up chemical reaction in the body |
| elimination | act of removal of materials from the body |
| circuatory system | an organ system that transports needed materials to cell and removes waste |
| contract | to draw together;to reduce in size |
| artery | a blood vessel that carrier blood away from the heart |
| vein | a blood vessel that carries blood back to the heart |
| capillary | a tiny blood vessel where substances are exchanged between the blood and body cells |
| lymph | fluid that thought the lympatic system consisting |
| boronchi | the two passages that direct air into the lungs |
| Alveoli | tiny thin - walled sacs of lung tissue speciallzed for the movement of gases between air and blood |
| Excretio | the process of moving wastes |
| Nephron | samall filtering stucture in the kidneys that removes wastes from blood an produces urine |
| neuron | A cell that carries information throught the nervous system |
| synapse | the junction where one neuron can transfer an impulse to another neuron |
| impulse | the message carried by a neuron |
| Drain | the partof the central nervous system that located in the skull and controls most function of the body |
| spinal cord | thick column of nervous tissue that linke the brain to most of the nerves that branch out though the body |
| reflex | automatic nervous that occurs without conscious control the condition it produces |
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