What increases the surface area in the stomach?
Rugae
Microvilli
Peritoneum
Muscularis
The Correct Answer is A
A. Rugae: The rugae are folds in the stomach lining that expand when the stomach fills with food, increasing surface area for digestion.
B. Microvilli: Microvilli increase surface area in the small intestine, not the stomach.
C. Peritoneum: The peritoneum is a membrane surrounding the abdominal cavity, not involved in surface area expansion of the stomach.
D. Muscularis: The muscularis is the muscle layer responsible for stomach contractions but does not increase surface area.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Parietal pleura: The parietal pleura is the outer layer of the pleura that lines the thoracic cavity and is connected to the thoracic wall.
B. Diaphragm: The diaphragm is the main muscle involved in respiration, but it is not part of the lung's outer layer.
C. Pleural cavity: The pleural cavity is the space between the parietal and visceral pleura, filled with pleural fluid to reduce friction.
D. Visceral pleura: The visceral pleura is the inner layer that covers the lungs but does not connect to the thoracic wall.
Correct Answer is C
Explanation
A. Expiratory reserve volume: This is included in the calculation of vital capacity (VC = TV + IRV + ERV).
B. Tidal volume: This is also included in vital capacity.
C. Residual volume: The residual volume is the air that remains in the lungs after a forced exhalation and is not part of the vital capacity.
D. Inspiratory reserve volume: This is included in the calculation of vital capacity.
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