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Organ systems

Organisation • Principles of organisation

Key concepts

What you'll likely be quizzed about

  • An organ system is a group of organs that collaborate to perform major functions for an organism.
  • This definition focuses on the interaction of organs rather than individual tissues or cells.
  • Examples include the digestive, circulatory, and respiratory systems.

Flashcards

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Why does failure in one organ affect its system?

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Because organs perform specialized and interdependent tasks; losing one function diminishes the system's overall capability.

Key notes

Important points to keep in mind

Organ systems consist of specialized organs that work together to perform major life functions.

Hierarchy: cells → tissues → organs → organ systems → organism.

Cause and effect: organ cooperation produces system-level functions; organ failure reduces system output.

Homeostasis relies on multiple systems; disruption of one system impacts internal stability.

Examples of limiting factors include organ damage and restricted blood flow.

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