Homeostasis Flashcards

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Organism

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A living being, such as a plant, animal, or bacterium, made up of one or more cells.

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Multicellular

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An organism made up of more than one cell, often with specialized cells for different functions.

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Organ System

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A group of organs that work together to perform a specific function, such as the circulatory or digestive system.

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Hierarchy

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The organization of biological structures and systems in levels of increasing complexity, from cells to tissues, to organs, to organ systems.

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Tissue

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A group of similar cells that work together to perform a specific function, like muscle tissue or nervous tissue.

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Organ

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A structure made up of different types of tissues that work together to perform a specific function, such as the heart or lungs.

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Circulatory System

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The system responsible for moving blood, nutrients, oxygen, and wastes throughout the body, consisting of the heart, blood, and blood vessels.

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Nervous System

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The system that controls and coordinates the body's responses to internal and external stimuli, consisting of the brain, spinal cord, and nerves.

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Respiratory System

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The system responsible for taking in oxygen and expelling carbon dioxide, including the lungs, trachea, and diaphragm.

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Digestive System

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The system that breaks down food into nutrients that the body can absorb and use, including the stomach, intestines, and liver.