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Elements in the Human Body

Terms in this set (25)

Most common elements in the human body
carbon, hydrogen, oxygen, nitrogen
Na+ concentration in the blood
Outside the cell - 135mEq/L - 145mEq/L
K+ concentration in the blood
3.5 - 5.5 mEq/L
Where is K+ most concentrated in the body
inside of cells
When a membrane channel opens, which way does Na+ naturally flow?
INTO CELLS
When a membrane channel opens, which way does K+ naturally flow?
OUT of CELLS
When Na+ rushes into the cell what occurs?
The cell becomes very positive causing it to be depolarized - this usually results in muscle contraction or excitation of a cell
When K+ leaves a cell what occurs?
The cell becomes more negative and repolarizes. This usually ends the muscle contraction or causes inhibition of a neuron
hyperkalemia
excessive potassium in the blood - can stop the heart
hypernatremia
excessive sodium in the blood
hypokalemia
deficient potassium in the blood
hyponatremia
deficient sodium in the blood
acidosis
pH of the blood below 7.35
alkalosis
pH of the blood above 7.45
causes of respiratory acidosis
lung disease
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