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Human Body Systems
| Term | Definition |
|---|---|
| Tissue | a group of similar cells that perform a specific function |
| 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 chemical 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 change |
| Digestion | The process by which your body breaks down food into small nutrient molecules |
| Nutrients | The substances in food that provide the raw materials the body's cells need to carry out all their 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 muscles 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 System | An organ system that transports needed materials to cells and removes waste |
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