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Initially the countercurrent exchange mechanism and its properties were proposed in 1951 by professor Werner Kuhn and two of his former students who called the mechanism found in the loop of Henle in mammalian kidneys a Countercurrent multiplier [14] and confirmed by laboratory findings in 1958 by Professor Carl W. Gottschalk. [15]
In many fish, a rete mirabile helps fill the swim bladder with oxygen, increasing the fish's buoyancy. The rete mirabile is an essential [ 8 ] part of the system that pumps dissolved oxygen from a low partial pressure ( P O 2 {\displaystyle {P_{\rm {O_{2}}}}} ) of 0.2 atmospheres into a gas filled bladder that is at a pressure of hundreds of ...
Pages for logged out editors learn more. Contributions; Talk; Counter-current heat exchange
Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. Within the gill filaments, capillary blood flows in the opposite direction to the water, causing counter-current exchange. The gills push the oxygen-poor water out through openings in the sides of the pharynx.
Hydrographic containment is a concept in fisheries oceanography that refers to the way a fish population utilizes different tides and currents at different times to remain in a certain region. [1] This concept was developed based on Harden Jones' triangle of migration. [ 2 ]
Countercurrent distribution, therefore, is a method of using a series of vessels (separatory funnels) to separate compounds by a sequence of liquid-liquid extraction operations. Contrary to liquid-liquid extraction, in the CCD instruments the upper phase is decanted from the lower phase once the phases have settled.
Battle Creek Central saw its season come to an end after a 2-1 loss in overtime to Parma Western on Wednesday in a district opener at Harper Creek. The Bearcats end with a 5-12-1 record.
Fish exchange gases by pulling oxygen-rich water through their mouths and pumping it over their gills. In some fish, capillary blood flows in the opposite direction to the water, causing countercurrent exchange. The gills push the oxygen-poor water out through openings in the sides of the pharynx.