What is dehydration-

When the lossess of water exceeds the intake of water, the body’s water content is reduced, that is, the body is in enegative water balance and this condition is known as Dehydration.

Properties of water-

1) Water is an extremely polar, hence is a good solevent.
2) It is a good insulator, hence controls the heat loss from the body.
3) Water has a very high dielectric constant.
4) Water shows hydrogen bonding with each other and variety of molecules such as protein, sugars, ions,etc.

Water balance-

Water is most common and abundant compound of all living system. An equilibrium is maintained between the intake and the loss of water from body. The regulatory mechanism of body water is influenced in addition to other factor by certain hormones, such as ADH oxytocin and aldosterone.

Heat regulation-

By virtue of its high specific heat, water prevents any significant rise in the body temperature due to heat liberated from body reaction. The loss of heat from the body is also regulated by the evaporation of water from skin and lungs and its removal in urine

Biological function of vitamin ‘C’-

Chemistry-
Vitamin c is also known as antiscorbutic vitamin. It is found in all living plant cells, it is an endiolaction, which is readily oxidized to dehydroascorbic acid. It is, therefore a good reducing agent. Both oxidized and reduced fiorms of vitamin are biologically active. It occurs as a white crystalline powder with faint yellowish tint. It is freely soluble in water.

Triglycerides

Triglycerides are the ester of fatty acids with glycerol. They are the best reserve food material in the human body. They act as insulator for the loss of body heat. The chemical structure of triglycerides consist of three different molecules of fatty acids with one molecule of glycerol. They are insoluble in water and soluble in organic solvents such as ether, chloroform, benzene. Their meltin points are low. Triglycerides on hydrolysis give three molecules of fatty acids and glycerol.