Organ Definition:
A Structure Consists of Multiple Types of Tissues

Organs are structures consists of multiple types of tissues.  For example, the stomach is an organ, and it consists of muscle tissues that allow stomach to move as well as epithelial tissues that protect the stomach’s surface.

organs are structures consists of multiple types of tissues

20160614f organ definition
(click to enlarge)

Next Generation Science Standards:

HS-LS1-2 Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.

MS-LS1-1 Conduct an investigation to provide evidence that living things are made of cells; either one cell or many different numbers and types of cells.

MS-LS1-2 Develop and use a model to describe the function of a cell as a whole and ways parts of cells contribute to the function.

MS-LS1-3 Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.

What Science Does this Comic Teach?

Unit: Anatomy

⇒Chapter: Immunology

⇒Topic: Organ Definition

Additional Information


It is the smallest living unit that make up all living things.  All living things consist of cells.  Some consist of a single cell, while others consist of multiple cells.


A tissue is a group of the same type of cells working together to perform one same goal (or goals).


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