Which body fluid produced in the mouth contains enzymes and electrolytes?

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Multiple Choice

Which body fluid produced in the mouth contains enzymes and electrolytes?

Explanation:
What this question tests is identifying the fluid produced in the mouth that carries digestive enzymes and electrolytes. Saliva, produced by the salivary glands, contains salivary amylase which starts starch digestion as you chew, and it also contains electrolytes such as bicarbonate, chloride, potassium, and phosphate that help with lubrication and pH balance. Mucus is mainly a lubricating secretion without digestive enzymes; blood is not produced in the mouth, and gastric juice comes from the stomach and has acid and pepsin, not in the mouth. So the fluid in the mouth that fits all parts of the clue is saliva.

What this question tests is identifying the fluid produced in the mouth that carries digestive enzymes and electrolytes. Saliva, produced by the salivary glands, contains salivary amylase which starts starch digestion as you chew, and it also contains electrolytes such as bicarbonate, chloride, potassium, and phosphate that help with lubrication and pH balance. Mucus is mainly a lubricating secretion without digestive enzymes; blood is not produced in the mouth, and gastric juice comes from the stomach and has acid and pepsin, not in the mouth. So the fluid in the mouth that fits all parts of the clue is saliva.

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