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  2. Potassium in biology - Wikipedia

    en.wikipedia.org/wiki/Potassium_in_biology

    The sodium–potassium pump a critical enzyme for regulating sodium and potassium levels in cells. Potassium is the main intracellular ion for all types of cells, while having a major role in maintenance of fluid and electrolyte balance. [1] [2] Potassium is necessary for the function of all living cells and is thus present in all plant and ...

  3. Potassium - Wikipedia

    en.wikipedia.org/wiki/Potassium

    Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily cut with a knife. [9] Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure.

  4. Potassium channel - Wikipedia

    en.wikipedia.org/wiki/Potassium_channel

    Potassium channels function to conduct potassium ions down their electrochemical gradient, doing so both rapidly (up to the diffusion rate of K + ions in bulk water) and selectively (excluding, most notably, sodium despite the sub-angstrom difference in ionic radius). [4] Biologically, these channels act to set or reset the resting potential in ...

  5. Renal physiology - Wikipedia

    en.wikipedia.org/wiki/Renal_physiology

    A simple means of estimating renal function is to measure pH, blood urea nitrogen, creatinine, and basic electrolytes (including sodium, potassium, chloride, and bicarbonate). As the kidney is the most important organ in controlling these values, any derangement in these values could suggest renal impairment.

  6. Inorganic ions - Wikipedia

    en.wikipedia.org/wiki/Inorganic_ions

    K + – potassium ions' main function in animals is osmotic balance, particularly in the kidneys. (See Hypokalemia.) Na + – sodium ions have a similar role to potassium ions. (See Sodium deficiency.) Mn 2+ - manganese ions are seen being used as stabilizer for varying protein configurations.

  7. Biological roles of the elements - Wikipedia

    en.wikipedia.org/wiki/Biological_roles_of_the...

    It can displace potassium in humans affecting the central nervous system. Thallium poisoning has a long history in humans, especially as it has sometimes been a preferred poison. thorium: 90: 1b: Has no known biological role. [11] Radioactive. thulium: 69: 2a: No known function in humans, and is not taken up by plants. [11] Toxic in some forms ...

  8. Sodium–potassium pump - Wikipedia

    en.wikipedia.org/wiki/Sodium–potassium_pump

    The sodium–potassium pump (sodium–potassium adenosine triphosphatase, also known as Na + /K +-ATPase, Na + /K + pump, or sodium–potassium ATPase) is an enzyme (an electrogenic transmembrane ATPase) found in the membrane of all animal cells. It performs several functions in cell physiology. The Na + /K +-ATPase enzyme is active (i.e. it ...

  9. Mineral (nutrient) - Wikipedia

    en.wikipedia.org/wiki/Mineral_(nutrient)

    Needed for production of hydrochloric acid in the stomach, in cellular pump functions and required in host defense Table salt (sodium chloride) is the main dietary source. hypochloremia / hyperchloremia: Sodium: 1500 2300; NE: A systemic electrolyte and is essential in coregulating ATP with potassium