Why glucose or salt alone are not effective

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Question: Oral rehydration solutions that contain both salt and glucose are highly effective in treating severe dehydration caused by diarrhea and vomiting. However, glucose or salt alone are not effective. Why?

1. Glucose without sodium is broken down too quickly in the mouth by saliva.

2. ATP is required to transport sodium unless glucose is available for cotransport.

3. Water alone rushes through the digestive tract too quickly to be absorbed by the body tissues.

4. Sodium transport and glucose transport are coupled in the small intestine so that glucose accelerates absorption of salt and water.

Reference no: EM133347756

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