Atlas One · Host Biology · Scale 02 — Atomic

Potassium

K⁺, atomic number 19. Principal intracellular cation (140 mmol/L cytosol vs. 3.5–5.0 mmol/L plasma). K⁺ efflux through Kv/Kir channels repolarises action potentials and sets resting membrane potential. Hypokalaemia prolongs QT and predisposes to torsades de pointes.

Also known as: K, K⁺, potassium ion, kalium, hypokalaemia, hyperkalaemia

Scale 02 — AtomicScale
draftStatus
2026-06-05Last Reviewed
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potassium

Potassium

K⁺, atomic number 19. Principal intracellular cation (140 mmol/L cytosol vs. 3.5–5.0 mmol/L plasma). K⁺ efflux through Kv/Kir channels repolarises action potentials and sets resting membrane potential. Hypokalaemia prolongs QT and predisposes to torsades de pointes.

Entry Metadata

FieldValue
IDpotassium
NamePotassium
Statusdraft
Last reviewed2026-06-05
Atlas01-human
Scale02-atomic

Cross-Atlas Connections

part-ofHuman Body modulatesNeuron modulatesSa Node Cell connects-toSodium connects-toAldosterone connects-toCardiomyocyte connects-toCardiac Conduction System

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