By Nakia Forsberg & Kelsey Neufeld
According to Bailey (2011), Cells in the human body number in the trillions and come in all shapes and sizes. These tiny structures are the basic unit of living organisms. Cells comprise tissues, tissues comprise organs, organs form organ systems, and organ systems work together in an organism. There are numerous cells in the human body and each one plays a significant role in how are body functions and adheres to all of its demands.