Organs such as the duodenum and pancreas that are located behind the peritoneum are described as ___.
Intraperitoneal
Retroperitoneal
Submucosal
Parietal
The Correct Answer is B
A. Intraperitoneal: This term describes organs that are completely surrounded by visceral peritoneum and suspended by mesenteries, such as the stomach. The duodenum and pancreas do not meet this criteria. They lack a complete peritoneal investment.
B. Retroperitoneal: This anatomical designation refers to organs situated posterior to the parietal peritoneum against the posterior abdominal wall. The pancreas and most of the duodenum are secondarily retroperitoneal. They are fixed in place outside the peritoneal cavity.
C. Submucosal: This refers to the layer of tissue situated beneath a mucous membrane. It is a histological classification of a tissue layer within an organ wall, not an anatomical description of an organ's position within the abdominal cavity.
D. Parietal: This term generally refers to the walls of a cavity, such as the parietal peritoneum lining the abdominal wall. It does not describe the specific location of viscera relative to the peritoneal sac.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The pharynxis a muscular tube located behind the nasal cavity and mouth, connecting to the esophagus. Its primary role in digestion is to propel swallowed food (bolus) from the oral cavity into the esophagus through coordinated muscular contractions. This process is part of deglutition (swallowing), which involves voluntary initiation in the mouth followed by involuntary reflexes in the pharynx. The pharyngeal muscles contract in sequence, pushing the bolus downward while preventing entry into the respiratory tract.
Correct Answer is A
Explanation
True:The stomach provides a distensible reservoir that allows for the ingestion of large meals. It slowly regulates the delivery of chyme into the duodenum via the pyloric sphincter. This allows for optimal downstream processing of nutrients.
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