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Organization of the Human Body

Introduces cells, tissues, organs, and organ systems in humans.

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Organization of the Human Body
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Vocabulary

cell

cell

Basic unit of structure and function of living things.
connective tissue

connective tissue

Tissue made up of cells that form the body’s structure, such as bone and cartilage.
epithelial tissue

epithelial tissue

Tissue made up of cells that line inner and outer body surfaces, such as skin.
muscle tissue

muscle tissue

Tissue made up of cells that can contract; includes smooth, skeletal, and cardiac muscle tissue.
nervous tissue

nervous tissue

Tissue made up of neurons, or nerve cells; carry electrical messages.
neuron

neuron

The structural and functional unit of the nervous system; a nerve cell.
organ

organ

Structure composed of more than one type of tissue that performs a particular function.
organ system

organ system

Group of organs that work together performing a specific function.
tissue

tissue

Group of cells of the same kind that perform a particular function in an organism.

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