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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
![The planes of the body. The sagittal plane is vertical from front to back, the frontal plane is vert](https://biology-forums.com/gallery/47/medium_14755_16_09_12_5_52_13_87461411.jpeg)
![Care must be taken in handling bodily fluids to prevent the transfer of infectious agents through co](https://biology-forums.com/gallery/47/medium_18099_24_09_12_10_41_39.jpeg)