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body vocab
science
| Question | Answer |
|---|---|
| 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 out of carbon, hydrogen, and oxygen atoms |
| oxegyn | a molecule that organisms get from the air or water around them and use to release energy |
| amino acid | molecules that are the building blocks of protein |
| 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 oxegyn and releases carbon dioxide |
| circulator 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 oxygenn poor blood back to the heart |
| capillaries | tiny blood vessels where the exchange of oxegyn, carbon dioxde, nutrients and waste occurs between the blood and the cells |
| circulation | movement of blood through the ear and blood vessels, delivering oxegyn & nutrients to the body, and removing waste products |
| lungs | main organ of the respiratory system where gas exchange occurs |
| diagraphm | muscular structure that seperates 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 oxegyn and carbon dioxide take place |
| ingestion | process of taking food into the body |
| digestion | process of breaking food down into its small parts |
| respiration | process by which oxygen is taken in and carbon dioxide is released by an organism |
| excretion | to remove waste |
| homeostatis | the body's ability to maintain a stable internal environment, even when external conditions change |
| voluntary | you need to decide on the action (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, it just happens). example the muscle that makes the esophagus |
| cardiac muscle | type of muscle tissue that makes up the heart and and oppurates involuntarily |
| cellular respiration | the chemical reaction between oxygen and glucose that releases energy into the cell |
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