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human body system
| Term | Definition |
|---|---|
| tissue | a group of similar cells that perform a specific function |
| organ | a body structure that is composed of different kinds of tissue 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 through ducts or into the bloodstream |
| hormone | (1) the chemicals produced by an endocrine gland (2) a chemical that affects growth and development |
| stress | the reaction of a person's body to potentially threatening, challenging, or disturbing events |
| interactions | the direct effect that one thing has on another |
| stable | resistant to sudden chance |
| digestion | the process by which your body breaks down food into small nutrient molecules |
| nutrients | the subsistence in food that provide the raw materials the body's cells need to carry out essential processes |
| absorption | the process by which nutrient molecules pass through the wall of the digestive system into the blood |
| 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 esophagus toward the stomach |
| saliva | fluid released from glands in the mouth that play an important role in mechanical and chemical digestion |
| enzymes | proteins that speed up chemical reactions in the body |
| elimination | act of removal of materials from the body |
| circulatory |
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