sodium potassium pump
Potassium is also important in how nerves and muscles work. Potassium is both an electrolyte and a mineral.
The Sodium Potassium Exchange Pump Sodium Potassium Pump Human Anatomy And Physiology Physiology
This two minute tutorial describes how the sodium-potassium pump uses active transport to move sodium ions Na out of a cell and potassium ions K into.

. When the sodium-potassium- ATPase enzyme points into the cell it has a high affinity for sodium ions and binds three of them hydrolyzing ATP and changing shape. The sodium-potassium pump moves K into the cell while moving Na at a ratio of three Na for every two K ions. When this pump is in operation sodium ions are pumped out of the cell and potassium ions are pumped into the cell. An example of active transport is the sodium-potassium pump.
Both ions move from areas of lower to higher concentration so ATP is needed to provide energy for this uphill process. A potassium test checks how much potassium is in the blood. Potassium levels often change with sodium levels. It helps keep the water the amount of fluid inside and outside the bodys cells and electrolyte balance of the body.
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