Regulation of levels of sodium ions (sodium)
Sodium ion (sodium) is the main electrolytes in the body
continuously expelled through urine and sweat.
Setting levels of sodium ion cells involves the adrenal cortex
(hormone aldosterone) and cells of renal tubules. Sodium ion (Sodium)
the main ions that make up the body’s electrolytes. Sodium
issued continuously through urine and sweat.
Tues specifically found in the kidney blood vessel walls play a role
osmoreceptors role as monitor levels of sodium ions in
blood. If sodium levels fall (osmolarity decreased), then the cells
the issue of changing the enzyme renin
angeiotensin angiotensinogen into angiotensin I and II.
Angiotensin II as a hormone to stimulate the cell cortex play a role
adrenal to synthesize and secrete aldosterone.
Aldosterone stimulates the cells to increase renal tubular
reabsorpi sodium in the urine so that the blood sodium levels returned
balanced (normal).
Very important role of kidneys in maintaining an atmosphere
internally to keep fit for survival in physiological processes
in the cell or the so-called homeostasis (WB Cannon). In
the human body, cells that make up the network in a
environment called the internal environment. Claude Bernard
(the French) is named the internal environment with
melieu term interieur.
Internal environment is none other than the
space between cells. Space between cells is not a room
empty, but the room is filled with fluid, thus
also space in the cell (cytoplasm).
According to Ganong (1991), the composition of our bodies most of the
is a liquid that is approximately 60%.
Fluids, based on the existence (where) can be separated into liquid
extracellular (CES) 20%, and intracellular (CIS) 40%. Liquids
extracellular fluid can be differentiated into interseluler (network)
75%, and plasma and lymph fluid 25%. For example, a person
weight 50 kg, the total body fluids about 30 L. CIS 20 L, 10 L CES, tissue fluid, and 7.5 L 2.5 and palsma fluid lymph.
Electrolyte is a substance that dissolves or decomposes into the form
ions and then the solution becomes electric conductors, ions
atoms are electrically charged. Electrolyte can be water,
acids, bases or other form of chemical compounds. Electrolyte generally
form of acid, alkali or salt. Some specific gas can be
serves as an electrolyte in certain circumstances such as the temperature
high or low pressure. Strong electrolyte acid is identical with,
bases, and salt strong.