A. False. The rate of gastric emptying is proportional to the volume of the stomach contents; approximately 1-3 % enters the duodenum per minute.

B. True.

C. False. The emptying rate for carbohydrates is >proteins >fats. The stomach should empty a light breakfast of toast within 4 h. A meal with a high fat or meat content may take
6 h or more.

D. False. In general it is safe to assume that the stomach will be empty if there has been no food intake in the last 6 h and normal peristalsis is occurring.

E. True. Milk should be regarded as a solid, as when it is mixed with gastric juice it thickens and congeals in the stomach.

F. False. Human breast milk has a lower fat and protein content that non-human milk so may be cleared more quickly from the stomach (4 h breast milk vs 6 h cows milk or formula).

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