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CH 4: Metabolism
Chapter 4 of our notebooks.
| Term | Definition |
|---|---|
| Metabolism | The body's use of molecules for energy and growth. |
| Glucose | A molecule that organisms can use 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 break it downs. |
| Respiratory System | The body system that takes in oxygenn 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 |
| Starch | 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 & 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 taking food into the body. |
| Respiration | Process by which oxygen is taken in and carbon dioxide is released by an organism. |
| 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 9 (think it) before it happens, done by choice. |
| Involuntary | Happens without you thinking about doing it, occurs automatically. |
| Smooth Muscle | Type of muscle found in internal organs that operates involuntarily (you don't have to think about it, just happens). Example: the muscle that makes up the esophagus. |
| Cardiac Muscle | Type of muscle tissue that makes up the heart and operates involuntarily (you don't have to think about it for it to happen) |
| Cellular Respiration. | The chemicaly reaction between oxygen and glucose that release energy into cells. |