4.2 Levels of Structural Organization of the Human Body

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The organization of the body often is discussed in terms of six distinct levels of increasing complexity, from the smallest chemical building blocks to a unique human organism.

In engineering terms, it is a multi-scale system

(Modified from: @OpenStaxAnatomy2020)

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4.2.1 Organ Systems of the Human Body

Organs that work together are grouped into organ systems.

(Modified from: @OpenStaxAnatomy2020)