Final answer:
The adult peritoneal cavity can hold up to 2 to 3 liters of fluid before signs of distention are evident. Excessive fluid buildup in this cavity is abnormal and can lead to serious health conditions like peritonitis.
Step-by-step explanation:
The adult peritoneal cavity can typically hold up to approximately 2 to 3 liters of fluid before evidence of distention becomes apparent. This cavity is an essential component of the digestive system, enveloping abdominal organs with its visceral and parietal layers. The presence of a small amount of lubricating fluid in the peritoneal cavity is normal; however, excessive accumulation can lead to conditions such as ascites, which subsequently can cause abdominal distension and discomfort. It is important to monitor fluid buildup in the peritoneal cavity as it may indicate or lead to serious medical conditions such as peritonitis, which is the inflammation of the peritoneum and can be life-threatening.