Questions: Question 15 (2.5 points) If the respiratory system fails, which other body systems will eventually fail? - Circulatory and digestive - Circulatory, nervous, and digestive - All body systems - Genitourinary, nervous, and musculoskeletal

The answer is the third one: All body systems.

Explanation for each option:

1. Circulatory and digestive: While the circulatory system is directly affected by the failure of the respiratory system due to the lack of oxygen transport, the digestive system is not immediately impacted. However, over time, all systems will be affected.

2. Circulatory, nervous, and digestive: The circulatory and nervous systems are indeed critical and will be affected by respiratory failure. However, the digestive system, while eventually impacted, is not as immediately critical as the circulatory and nervous systems.

3. All body systems: This is the correct answer. The respiratory system is responsible for oxygenating the blood, which is essential for the functioning of all body systems. If the respiratory system fails, oxygen delivery to tissues and organs is compromised, leading to the eventual failure of all body systems.

4. Genitourinary, nervous, and musculoskeletal: While these systems will eventually be affected by the lack of oxygen, they are not the first to fail. The nervous system is critical, but the genitourinary and musculoskeletal systems are not immediately impacted.

In summary, the failure of the respiratory system leads to a lack of oxygen in the body, which will eventually cause all body systems to fail.