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Body System
| Term | Definition |
|---|---|
| Metabolism | The body's use of molecules for energy and growth |
| Glucose | A molecule that organisms can see to release energy, and that is made of carbon, hydrogen, and oxygen atoms |
| Oxygen | A molecule that organisms get from the air or water around them and use to release energy |
| Amino Acids | Molecules that are the building blocks of proteins |
| System | A set of interacting parts forming a complex whole |
| Digestive System | The body system that takes in food and breaks it down |
| Respiratory System | The body system that takes in oxygen and releases carbon dioxide |
| Circulatory System | The body system that transports molecules to and from all cells of the body |
| Energy | The ability to make things move or change |
| Protein | A category of large molecules that perform important functions inside living things |
| Startch | A type of energy storage molecule made of many glucose molecules connected together |
| Tissue | A group of cells that work together to perform a specific job |
| Heart | Muscular organ that pumps blood throughout the body |
| Arteries | Blood vessels that carry oxygen rich blood from the heart to the body |
| Veins | Blood vessels that return oxygen poor blood back to the heart |
| Capillaries | Tiny blood vessels where the exchange of oxygen, carbon dioxide, nutrients, and waste occurs between the blood and the cells |
| Circulation | Movement of blood through the heart and blood vessels, delivering oxygen and nutrients to the body, and removing waste products |
| Lungs | MAin organ of the respiratory system where gas exchange occurs |
| Diaphragm | Muscular structure that separates the chest cavity from the abdominal cavity and plays a key role in breathing |
| Alveoli | Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide take place |
| Ingestion | Process of taking food into the body |
| Digestion | Process of breaking food down into its smaller parts |
| Respiration | Process bby which oxygen is taken in and carbon dioxide is released by and organsim |
| Excretion | To remove waste |
| Homeostasis | The body's ability to maintain a stable internal environment, even when external conditions change |
| Voluntary | You need to decide on the action before it happens, done by choice |
| Involuntary | Happens without you thinking about doing it, occurs automatically |
| Smooth Muslce | Type of muscle found in internal organs that operates involuntarily |
| Cardiac Muscle | Type of muscle tissue that makes up the heart and operates involuntarily |
| Cellular Respiration | The chemical reaction between oxygen and glucose that releases energy into cells |
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