Human Body Systems Review

Front

Organism Noun

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[or-guh-niz-um]

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Organism

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An individual living being, representing the most complex level of biological organization, capable of response to stimuli and reproduction.

Front

Organ System Noun

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[or-guhn sis-tuhm]

Back

Organ System

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A group of organs that work together to perform one or more specific, complex functions within the body.

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Organ Noun

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[or-guhn]

Back

Organ

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A self-contained structure made of two or more types of tissues that work together to perform a specific task.

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Tissue Noun

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[tish-oo]

Back

Tissue

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A group of similar cells from the same origin that are organized together to carry out a specific function.

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Cell Noun

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[sel]

Back

Cell

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The basic structural, functional, and biological unit of all known living organisms, often called the smallest unit of life.

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Organelle Noun

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[or-guh-nel]

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Organelle

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A specialized subunit found within a cell that has a specific function, analogous to an organ in the body.

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Molecule Noun

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[mol-i-kyool]

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Molecule

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An electrically neutral group of two or more atoms held together by chemical bonds, forming a fundamental unit of a substance.

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Atom Noun

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[at-uhm]

Back

Atom

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The smallest and most basic unit of matter that retains all the chemical properties of a specific element.

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Neuron Noun

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[noor-on]

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Neuron

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A specialized cell, also known as a nerve cell, that transmits electrical and chemical signals in the nervous system.

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Connective Tissue Noun

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[kuh-nek-tiv tish-oo]

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Connective Tissue

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A type of biological tissue that connects, supports, binds, or separates other tissues and organs in the body.