Water

Water, Minerals and Electrolytes

Functions

* Heat capacity

* Cooling ability

* Participation in metabolism

* Ph balance

* Body fluids

* Your body precisely controls and balances the concentration of electrolyte dissolved in its watery fluids

* Water makes up between 45-75% of person weight

* People have optional more water because muscle tissue is nearly three-fourths water by weight where adipose tissue is about 10% water.

* Lubrication- joint synovial fluid eyes, vitreous humor and gastric fluid (GI tract)

Water Chemical Formula H20

Water in your body contains numerous dissolved minerals called electrolytes that are kept in contrast balance

We each need a different amount depending on our size, body composition and activity levels as well as the temperature and humidity of the environment

Adequate intakes for total water, including drinking water, beverages, and food is 3.7 liters per day for men and 2.7 per day for women

Water

Water Balance

* Regulated (controlled or maintained) by thirst and excretion

* Adosterone and Antidiuretic hormones

* Alcohol, caffeine, salt, diuretics, affect H2O

Water Loss

* Kidney (urine)

* GI tract (fecal)

* Mouth (CO2)

* Skin(perspiration)

Water /Minerals Involved in H2O Balance

* Extracellular (EC) 15 liters

Na:K+

28: 1ratio

Cl-:Mg

* Intercellular(IC) 30 liters

K+: Na++

10:1ratio

* Transcelluar (TC)

Eye(vitreous humor)

Joint (synovial)

GI (gastric fluid)

Water

* Requirements

* 6-8 (8oz) glasses

* Sources

* Food (especially fruits and vegetables)

* Beverages milk, fruit and veg. juices, tea

* Water

* Def.

* Dehydration and death

Electrolytes

* Mineral salts dissolved in water become ionized (++ or – charges forming electrolytes)

KCL+ H20 --------> K++ + Cl-

NaCl + H2O --------> Na++ + C- (electrolytes)

*Osmosis the ability of H2O to cross...