HNF 150: Water

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Severe dehydration symptoms:

pale skin, confusion, bluish lips and fingertips, weak rapid irregular pulse, shallow breathing, shock, seizure, coma, death.

Sources of water input:

foods, liquids, water created by metabolism.

Which part of the brain regulates water intake?

hypothalamus.

Which is NOT a sign of dehydration?

increased urination.

Safety regulations for bottled water:

1/week testing for bacteria and 1/year testing for chemicals.

Solvent:

a substance that dissolves another and holds it in a solution.

Diuretic:

compound, usually a medication, causing increased urinary water excretion.

Electrolytes:

compounds that partly dissociate in water to form ions, such as potassium ion.

Hard water:

contains dissolved minerals like calcium and magnesium.

Mild dehydration symptoms:

dry mouth, lack of energy, reduced urine, sudden weight loss, low BP, rough dry skin, impaired kidney function.

Ions:

electrically charged particles such as sodium or chloride.

Sources of water output:

kidneys, skin, lungs, feces.

Dehydration:

loss of water, symptoms progress rapidly from thirst to weakness to exhaustion, delirium and even death.

Major roles of water:

lubricant, chemical reactions, solvent, shock absorber, regulates body temperature, carries nutrients throughout the body, cleanses tissue and blood of wastes.

____ is generated in the tissues during the chemical breakdown of nutrients.

metabolic water.

Causes of dehydration:

not enough fluids, diuretics, excessive salt and sugar intake.

Example of soft water:

rainwater.

Safety regulations of tap water:

requires disinfection, Ecoli banned, hundreds of bacteria testing each month, filtering for pathogens and testing for chemicals 1/quarter.

Soft water contains more of which mineral?

sodium.

Which type of water is more highly regulated?

tap water.

Water balance:

the balance between water intake and water excretion, which keeps the body's water content constant.

What is usually the first sign of dehydration?

thirst.

Soft water:

treated water with only sodium ion.


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