The lower boundary of the exosphere is called the exobase. It is also called exopause and 'critical altitude' as this is the altitude where barometric conditions no longer apply. Atmospheric temperature becomes nearly a constant above this altitude.
Sodium â the volatility and solvent mineral: essential to life, all body fluids contain sodium â itâs needed for many biochemical processes including water balance regulation, fluid distribution on either side of the cell walls, muscle contraction and expansion, nerve stimulation and acid-alkaline balance.
How to Identify Symptoms of Sodium Imbalance. Sodium is a mineral that is essential to optimal body functioning. It helps the body maintain normal fluid balances, nerve impulse transmission and a proper acid-base balance within tissues. Lack of proper sodium balance may cause high blood pressure, cramps, mental sluggishness and loss of appetite.