Emergency Medical Technician (EMT) Intermediate Practice Exam

Why can disease or inflammation of organs behind the abdominal cavity cause signs of peritonitis?

1. Because they are attached to the diaphragm

2. Because the organs are less sensitive

3. Because the parietal peritoneum is richly supplied with sensitive nerves

4. Because of the accumulation of toxins

The correct answer is: Because the parietal peritoneum is richly supplied with sensitive nerves

The correct answer is supported by the fact that the parietal peritoneum, which is the outer layer of the peritoneum lining the abdominal cavity, is highly sensitive due to its rich nerve supply. When there is disease or inflammation of the organs behind the abdominal cavity, it can irritate the parietal peritoneum. This irritation causes pain, which is a hallmark sign of peritonitis. The sensitivity of the parietal peritoneum can lead to the characteristic symptoms associated with peritonitis, such as abdominal pain and tenderness. The patient may experience guarding, rebound tenderness, and rigidity as a response to the inflammation. This highlights the important role that sensory nerves play in the detection and signaling of pain when there is a pathological process occurring within the abdominal cavity. The other options involve factors that do not directly explain the pain associated with peritonitis. For instance, although some organs may be attached to the diaphragm, that does not directly relate to the signs of peritonitis. Additionally, the claim regarding organs being less sensitive contradicts the physiological understanding, as inflammation increases sensitivity. Lastly, while the accumulation of toxins might contribute to the overall clinical picture, it is not the primary reason for the signs of periton