Physiology · Cell Biology · Medium
Sodium
Meaning: The principal extracellular electrolyte regulating fluid balance and nerve function.
In practice: Low sodium (hyponatraemia) causes confusion and seizures in severe cases.
Quick check
Two questions on related physiology words.
Which word means: To take up substances across a biological membrane into the bloodstream.
Answer: Absorb
Which word means: The process by which a neurotransmitter carries a chemical signal across a synapse.
Answer: Neurotransmission
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