Body Systems

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Unicellular Adjective

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[yoo-ni-sel-yuh-ler]

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Unicellular

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An organism made of only one cell, which carries out all of life's functions.

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Example: This image shows a unicellular organism, demonstrating how one cell performs all life functions.

Front

Multicellular Adjective

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[muhl-tee-sel-yuh-ler]

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Multicellular

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An organism made of more than one cell, with different cells performing specialized functions.

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Example: This image shows skeletal muscle cells, highlighting their structure and specialization, demonstrating multicellularity.

Front

Cell differentiation Noun

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[sel dif-uh-ren-shee-ey-shuhn]

Back

Cell differentiation

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The process by which cells become specialized to perform different functions, such as becoming muscle or nerve cells.

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Example: A central stem cell differentiates into specialized cells like neurons and muscle cells, showing cell specialization.

Front

Tissue Noun

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[tish-oo]

Back

Tissue

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A group of similar types of cells that work together to carry out specific tasks.

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Example: The image shows heart muscle tissue, with labeled parts like nucleus and muscle fiber, illustrating how similar cells work together.

Front

Organ Noun

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[or-guhn]

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Organ

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A group of different tissues working together to perform a particular job within an organism.

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Example: The image shows the stomach wall layers, demonstrating how tissues form an organ to perform digestion.

Front

Organ system Noun

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[or-guhn sis-tuhm]

Back

Organ system

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A group of different organs that work together to complete a series of tasks for the body.

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Example: The image shows the digestive system, illustrating how organs like the stomach and intestines work together as an organ system.

Front

Organism Noun

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[or-guh-niz-uhm]

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Organism

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A living thing, which can be unicellular or multicellular with many organ systems working together.

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Example: An amoeba is a single-celled organism, showing how some living things are made of just one cell.

Front

Muscle tissue Noun

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[muhs-uhl tish-oo]

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Muscle tissue

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A body tissue composed of cells that can contract to produce movement in the body.

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Example: This diagram shows muscle tissue with labeled parts like nucleus and muscle fiber, explaining how cells contract to produce movement.

Front

Connective tissue Noun

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[kuh-nek-tiv tish-oo]

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Connective tissue

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Tissue that provides structure and support and often connects other types of tissue together.

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Example: The image shows connective tissue in the human body, highlighting its role in providing structure and support.

Front

Nervous tissue Noun

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[nur-vuhs tish-oo]

Back

Nervous tissue

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The main tissue component of the nervous system, which carries messages to and from the brain.

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Example: A motor neuron diagram showing how signals are transmitted through nervous tissue.