Misrepresentation of gastric emptying ()
A. Gastric peristalsis is the power of gastric emptying
B. Vagal excitation promotes gastric emptying
C. Liquid food empties faster than solid food
D. Sugar food empties fastest, protein slowest
E. The mixed food is completely emptied 6 hours after eating
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The site that can promote vitamin B12 is ()
A. Duodenum
B. Jejunum
C. Ileum
D. Upper colon
E. Rectum
Gastric mucosa often in high acid and pepsin environment will not digest itself, because of the existence of self-protection mechanism, the main mechanism is ()
A. Mucus barrier
B. Mucus cell protection
C. Bicarbonate barrier
D. Mucus bicarbonate barrier
E. mucilage gel layer protection
Vitamin B12 is necessary for many metabolic processes. Which of the following conditions will not cause deficiency ()
A. Total gastrectomy
B. Autoimmune destruction of gastric parietal cells
C. Gastric acid deficiency caused by chronic gastritis
D. Surgical resection of jejunum
E. Surgical resection of ileum
A 35-year-old man has a vital capacity of 5 L, a tidal volume of 0.5 L, an inspiratory capacity of 3.5 L, and a functional residual capacity of 2.5 L. What is his expiratory reserve volume?
A. 4.5L
B. 3.0L
C. 2.5L
D. 2.0L
E. 1.5L
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