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Questions and Answers
What maintains the openness of the trachea?
Which cells secrete surfactant in the lungs?
What is the primary function of surfactant in the lungs?
Which law explains how the total pressure of a gas mixture is the sum of the partial pressures of each gas in the mixture?
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What are the two types of cells that make up the alveoli?
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What is the primary function of bile salts in digestion?
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Peristalsis is a voluntary process controlled by the brain.
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The low pH of the stomach helps activate pepsinogen into pepsin for protein digestion.
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The hepatic portal circulation carries nutrient-rich blood from the intestines to the liver.
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Surfactant in the lungs increases surface tension to prevent alveolar collapse.
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Dalton's law states that each gas in a mixture exerts pressure independently of the other gases present.
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Bohr effect describes how increased CO2 levels in the blood decrease hemoglobin's affinity for oxygen.
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Villi and microvilli in the small intestine increase surface area for absorption of nutrients.
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The long reflexes in digestion are initiated by stimuli within the GI tract itself.
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The primary function of cholecystokinin (CCK) is to stimulate the release of bile from the liver.
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HCl secretion in the stomach is regulated by gastrin, which stimulates acid production.
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