The human body is composed of cells, organs, organ system and tissues. How are these organized

Cells
cells make tissues, tissues make organs, organs make organ systems.

These four basic cell types, together with their extracellular materials, form the fundamental tissues of the human body: (1) epithelial tissues, which cover the body's surface and line the internal organs, body cavities, and passageways; (2) muscle tissues, which are capable of contraction and form the body