Colorado CNA Practice Exam

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Prepare for the Colorado CNA Exam with expert-designed quizzes. Learn with helpful tips and multiple choice questions, complete with hints and detailed explanations. Ace your certification!

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Rheumatoid arthritis is an autoimmune illness. With an autoimmune illness, the body's ______ system attacks normal tissue.

Digestive
Endocrine
Immune
Nervous

The correct answer is: Digestive

Rheumatoid arthritis is a condition where the immune system mistakenly attacks the healthy tissues in the body, causing inflammation and pain in the joints. This is an example of an autoimmune illness, where the body's immune system, responsible for fighting off infections and diseases, mistakenly targets its own tissues. The other options, such as the digestive, endocrine, and nervous system, are not involved in this process and are therefore incorrect. The digestive system is responsible for breaking down food and absorbing nutrients, the endocrine system regulates hormones and metabolism, and the nervous system controls bodily functions and enables communication between different parts of the body. None of these systems have a direct role in the development of rheumatoid arthritis, making them incorrect options.