Chapter 39 - Physiology, Homeostasis, and Temperature Regulation - 39.2 - Physiological Systems Maintain Homeostasis of the Internal Environment - 39.2 Recap - Learning Outcomes - Page 829: 3

The hierarchal structure of physiological function describes how the many structures of an organism are organized to carry out important functions. Cells make up tissues and groups of tissue form an organ. Various organs spread throughout the body make up an organ system.

The hierarchal structure of physiological function describes how the many structures of an organism are organized to carry out important functions. Cells make up tissues and groups of tissue form an organ. Various organs spread throughout the body make up an organ system.