You searched for: “organs
organ (s) (noun), organs (pl)
A structural unit in which a number of tissues, combined in specific amounts and patterns, perform a common task in a living creature: An organ is a relatively independent part of the body that carries out one or more special functions.

The organs of the human body include such areas as the eye, the ear, the heart, the lungs, and the liver.

(the structure of organisms from the smallest components of cells to the biggest organs and their relationships to other organs especially of the human body)
(the relative locations of sections of the body, or bodily organs, and their actions and activities)
(Various living organisms are organized from the smallest unit of cells to form tissues which form organs and organs work together to form organ systems)