As for what is fear biologically speaking, when a person experiences fear, certain areas in their brain such as the amygdala and the hypothalamus are immediately activated and appear to control the first physical response to fear.
Kidney Stones Overview. Kidney stones are small pebbles of salt and mineral in the urine. The most common symptom is severe pain. Most stones pass on their own, but medical procedures are used to remove some kidney stones.
Renal Calculi (Kidney Stones). A stone that develops from crystals that form in urine and build up on the inner surfaces of the kidney, in the renal pelvis, or in the ureters. Kidney stones include calcium oxalate stones, cystine stones, struvite stones, and uric acid stones.hey can be as small as a grain of sand or as large as a golf ball, although stones that big are rare. If a kidney stone is small enough, it can move or pass through your urinary tract and out of your body on its own. If the stone is too large, however, it could get stuck in your kidney or ureter.