The human body is made up of interconnected systems, such as the skeletal, muscular, cardiovascular, respiratory, digestive, and nervous systems, which perform specific functions. Organs are ...
The body is, for all intents and purposes, an extraordinarily complex machine. This requires a multitude of parts all working together in complicated relationships from the micro- to macromolecular ...
Humans are complex organisms made up of trillions of cells, each with their own structure and function. Scientists have come a long way in estimating the number of cells in the average human body.
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