An organ is a group of tissues that constitutes a distinct structural and functional unit, such as the heart, which is composed of all four tissue types and functions to pump blood.

Authors

• Person: Not available Organization: Britannica
  Human body | Organs, Systems, Structure, Diagram, & Facts

Sources

• Human body | Organs, Systems, Structure, Diagram, & Facts www.britannica.com Britannica via serper

Referenced by nodes (4)

• blood concept
• heart concept
• tissue concept
• organ concept