click below
click below
Normal Size Small Size show me how
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 |