Human Organs: Digestive Enzymes, Bacteria & Functions

Digestive organs secrete essential enzymes like amylase and protease to process food. Understand the roles of the skeleton and the impact of bacteria on organs.

Red Blood Cells

Differences Between Body Cells & Neurons

The human body is comprised of trillions of cells. Over 200 types of cells make up the organs, bones, muscles and nervous system. All the cells have similarities, such as a membrane on the outer surface and organelles--structures that perform cellular functions--within the cell.

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