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They secrete substances that enter the blood. These are of two kinds: renin,
which is concerned indirectly with the control of electrolyte balance and blood
pressure; and erythropoietin, which is important for the formation of hemoglobin
and red ...
A profound fall in systemic blood pressure, as after severe hemorrhage, may so
reduce renal blood flow that no urine at all is formed for a time. Death may occur
from suppression of glomerular function if dehydration causes a fall in pressure.
The malpighian tubules, which vary in number from two in some species to over
100 in others, end blindly in the body cavity (which is a blood space) and open
not directly to the exterior but to the alimentary canal at the junction between ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review