Physiology · Digestive System · Easy
Absorb
Meaning: To take up substances across a biological membrane into the bloodstream.
In practice: Iron is absorbed mainly in the duodenum and requires an acidic environment.
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: A chemical or electrical message that triggers a cellular or physiological response.
Answer: Signal
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