AwesomeKirito
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What is the function of the immune system? It exchanges oxygen and carbon dioxide. It provides structure for the body. It eliminates waste from the body. It responds when pathogens enter the body.

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melissaerdem
The function of the Immune System is to respond when pathogens enter the body.  The Immune System is not responsible for exchanging oxygen and carbon dioxide, that is the job of the Respiratory System.  It also does not provide structure for the body, that is the role of the Skeletal System.  And finally, the Excretory System is responsible for the removal of waste.
luisvaschetto

The statement 'it responds when pathogens enter the body' BEST describes the function of the immune system.

  • The immune system refers to different biological mechanisms and cellular components aimed at protecting the organism from diseases.

  • The immune system is composed of specific cells (e.g., T cells) and molecules (e.g., inflammatory cytokines and immunoglobulins) that recognize specific pathogens in order to destroy them.

  • The pathogenic microorganisms (e.g., bacteria) contain specific antigens that can be recognized by the components of the immune system.

In conclusion, the statement 'it responds when pathogens enter the body' BEST describes the function of the immune system.

Learn more about the immune system here:

https://brainly.com/question/504156

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