Which is the correct order of biological organization in the human body?

The correct order of biological organization in the human body is based on the hierarchy of complexity from the smallest unit to the largest functional structure. This hierarchy begins with cells, which are the basic building blocks of life. Cells come together to form tissues, which are groups of similar cells working collaboratively to perform specific functions. These tissues then organize to create organs, which are structures made of multiple tissue types that work together to perform complex functions. Finally, organs are organized into systems, where multiple organs collaborate to carry out broad physiological functions.

This sequential organization illustrates how smaller units contribute to the complexity and functionality of larger structures in the body, emphasizing that each level is built upon the previous one. Understanding this order is essential for comprehending how the body operates as an integrated whole.