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human body systems
| Term | Definition |
|---|---|
| tissue | a group of similar cells that perform a specific function |
| Organ | a body structure that composed different kinds of tissues that work together |
| Organ systems | Body structure that is composed of different kinds of tissues that work together to perform a major function |
| gland | an organ that produces and releases chemicals either through ducts or into the bloodstream |
| hormone | (1) the chemicals produced by an endocrine gland (2) A chemicals that affects growth and development |
| stress | the reaction of a person's body potentially threatening challenging, or disturbing events |
| interactions | the direct effect that one thing has another |
| stable | resistant to sudden change |
| digestion | the process by which your body breaks down food into small nutrients molecules |
| nutrients | the substance in food that |
| absorption | the process by which nutrient molecules pass through |
| carbohydrates | a energy-rich organic compound, such as sugar or starch that is made of the elements carbon, hydrogen and oxygen |
| peristalsis | waves of smooth muscle contractions that move food through the esphagus toward the stomach |
| saliva | fluid released from glands in the mouth that pay an important role in mechanical an chemical diegestion |
| ensymes | proteins that speed up chemical reaction in the body |
| Elimination | act of removal of material from the body |
| circulatory system | an organ system that transports needed materials to cell and removes waste |
| contract | a draw together; to reduce in size |
| artery | a blood vessel that caries blood away from the heart |
| vein | A blood blood vessel that caries blood back to the heart |
| capillary | a tiny blood vessel where substance are exchanged between the blood and body cells |
| lymph | fluid that travels through the lymphatic system consisting of water, white blood cells, and dissolved meaterials |
| bronchi | the two passages that direct air into the lungs |
| alveoli | tiny thin-walled sacs of lung tissue specialized |
| excretion | the process of moving waste |
| nephron | small filtering structure in the kidneys that removes wastes from blood and produces urine |
| neuron | a cell that caries information through the nervous system synapse the junction where |
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