Physiology · Digestive System · Easy
Absorption
Meaning: The uptake of nutrients or substances across a membrane into the bloodstream.
In practice: Most nutrient absorption occurs in the small intestine.
Quick check
Two questions on related physiology words.
Which word means: An ion dissolved in body fluids, such as sodium or potassium, that conducts electricity.
Answer: Electrolyte
Which word means: The absorption of a substance into a cell, tissue, or organ from surrounding fluid.
Answer: Uptake
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