You are returning home from school. On the way, you find a sealed envelope in a street, fully addressed with unused stamps on it You would:

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#Question id: 12048

#Unit 7. System Physiology – Animal

A 10-year-old boy consumes a cheeseburger, fries, and chocolate shake. The meal stimulates the release of several gastrointestinal hormones. The presence of fat, carbohydrate, or protein in the duodenum stimulates the release of which of the following hormones from the duodenal mucosa?

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#Question id: 12047

#Unit 7. System Physiology – Animal

Biopsies are taken from the antral and duodenal mucosa of a 65-year-old woman. Which of the following hormones can be found in tissue homogenates from both locations?

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#Question id: 12046

#Unit 7. System Physiology – Animal

Which of the following ions has the highest concentration in saliva under basal conditions?

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#Question id: 12045

#Unit 7. System Physiology – Animal

Compared to plasma, saliva has the highest relative concentration of which of the following ions under basal conditions?

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#Question id: 12044

#Unit 7. System Physiology – Animal

The proenzyme pepsinogen is secreted mainly from which of the following structures?

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#Question id: 12042

#Unit 7. System Physiology – Animal

A 19-year-old woman visits her physician because of nausea, diarrhea, light headedness, and flatulence. The physician administers 50 g of oral lactose at time zero, and measures breath hydrogen every 30 min for 3 hr using a hand-held monitor. The results are shown above. Which of the following best describes this patient’s condition?