Some people are very sensitive to flea bites -- but scratching can cause a wound or infection. The best solution is to get rid of fleas on pets and in your home. Keep pets out of your bed and be sure to vacuum rugs daily. Spray insecticides according to directions on infested areas.
Antidiuretic hormone binds to receptors on cells in the collecting ducts of the kidney and promotes reabsorption of water back into the circulation. In the absense of antidiuretic hormone, the collecting ducts are virtually impermiable to water, and it flows out as urine. Antidiuretic hormone stimulates water reabsorbtion by stimulating insertion of water channels or aquaporins into the membranes of kidney tubules.
ADH does this by regulating the rate or amount of water reabsorption at the distant tubules of the kidneyâs nephrons. It is also said that ADH has the ability to reabsorb urea which, in turn, reabsorbs water through osmosis (movement of water from an area of lower concentration to an area of higher concentration).