WASHINGTON -- With less than a week remaining before results are counted, the presidential race remains remarkably close, with President Barack Obama maintaining a very narrow lead in most polls over Republican nominee Mitt Romney in Ohio, the state whose outcome could well decide the election.
The end result of the two negative feedback loops is that, under ordinary circumstances, hormone production by target glands and the serum concentrations of target gland hormone are maintained within very narrow limits but that, under extraordinary circumstances, this tight control can be overridden by stimuli originating outside of the endocrine system.
Adequate neuronal function requires a highly regulated extra-cellular environment, wherein the concentrations of ions such as sodium, potassium and calcium must be maintained within very narrow ranges.
The hypothesis that maintaining the level of glycemia under very strict control would be relevant in any clinical setting is, in my opinion, stressed by the recent evidence that glycemia in normoglycemic people is always maintained in very narrow range, particularly after a meal (31, 32).
John maintained very poor eye contact.
Bones are the storage tank for calcium compounds that regulate the acid-base balance of the blood, which must be maintained within a very narrow range.
Therefore, in people with normal parathyroid glands, serum calcium concentrations are maintained within a very narrow range even in the presence of large changes in calcium intake or excessive losses of calcium from the body.
Warfarin is a widely used anticoagulant that needs to be closely monitored as patients whose warfarin levels are not maintained within its very narrow therapeutic index are at risk for clotting or bleeding.
Med. 25, 245 254 (2008) In healthy individuals, blood glucose concentrations are maintained within a very narrow range, despite major fluctuations in glucose entry into the body and glucose utilization in tissue metabolism.
Living organisms maintain body temperature in very narrow ranges in order to survive.
