• Countercurrent exchange is a mechanism between two flowing bodies flowing in opposite directions to each other, in which there is a transfer of some property...
    39 KB (5,170 words) - 13:17, 24 May 2025
  • concentrate urine is also present in birds. Countercurrent multiplication is frequently mistaken for countercurrent exchange, a similar but different mechanism...
    7 KB (812 words) - 11:23, 23 June 2025
  • Look up countercurrent in Wiktionary, the free dictionary. Countercurrent may refer to: Countercurrent pool Countercurrent exchange Countercurrent chromatography...
    637 bytes (108 words) - 05:57, 16 September 2021
  • Thumbnail for Gas exchange
    in the gas exchanger. A countercurrent system such as this maintains a steep concentration gradient along the length of the gas-exchange surface (see...
    57 KB (6,635 words) - 08:17, 17 January 2025
  • Thumbnail for Heat exchanger
    higher. See countercurrent exchange. In a cross-flow heat exchanger, the fluids travel roughly perpendicular to one another through the exchanger. Fig. 1:...
    70 KB (9,515 words) - 01:53, 25 June 2025
  • Thumbnail for Fish gill
    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...
    21 KB (2,525 words) - 07:23, 6 March 2025
  • Thumbnail for Rete mirabile
    utilizes countercurrent blood flow within the net (blood flowing in opposite directions) to act as a countercurrent exchanger. It exchanges heat, ions...
    12 KB (1,390 words) - 08:04, 25 May 2025
  • Thumbnail for Respiratory system
    exposes a large gas exchange surface area to the very large volumes of water passing over them. Gills use a countercurrent exchange system that increases...
    95 KB (11,271 words) - 05:39, 8 May 2025
  • Thumbnail for Blast furnace
    with an upflow of hot, carbon monoxide-rich combustion gases is a countercurrent exchange and chemical reaction process. In contrast, air furnaces (such...
    67 KB (7,778 words) - 03:19, 29 May 2025
  • Thumbnail for Fish physiology
    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...
    80 KB (9,831 words) - 20:28, 7 June 2025
  • Thumbnail for Acrocyanosis
    create a countercurrent exchange system that attempts to retain heat. Profuse sweating would then be caused by an overwhelmed countercurrent exchange system...
    13 KB (1,402 words) - 23:13, 23 May 2025
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    in the opposite direction to the water, resulting in efficient countercurrent exchange. The gills push the oxygen-poor water out through openings in the...
    103 KB (10,247 words) - 03:16, 27 June 2025
  • Thumbnail for Nephron
    ascending limb is impermeable to water, a critical feature of the countercurrent exchange mechanism employed by the loop. The ascending limb actively pumps...
    25 KB (2,842 words) - 14:11, 19 April 2025
  • the so-called countercurrent centrifuge, the bottom of the gaseous mix can be heated, producing convection currents. But the countercurrent is usually stimulated...
    17 KB (2,038 words) - 03:21, 27 June 2025
  • Thumbnail for Gill
    molluscs, the efficiency of the gills is greatly enhanced by a countercurrent exchange mechanism in which the water passes over the gills in the opposite...
    21 KB (2,726 words) - 00:37, 24 May 2025
  • Thumbnail for Bumblebee
    internal mechanisms of "shivering" (called heterothermy), and countercurrent exchange to retain heat. Other bees have similar physiology, but the mechanisms...
    108 KB (11,626 words) - 05:32, 31 May 2025
  • Thumbnail for Siemens family
    communications cable. In 1857, Werner von Siemens described the countercurrent exchange and in 1867 a dynamo without permanent magnets. A similar system...
    22 KB (1,380 words) - 11:32, 11 April 2025
  • Thumbnail for Atlantic bluefin tuna
    used for power and steady swimming, the Atlantic bluefin uses countercurrent exchange to prevent heat from being lost to the surrounding water. Heat...
    48 KB (5,648 words) - 00:45, 24 June 2025
  • Thumbnail for Pinniped
    mammals. Also, the blood vessels in their flippers are adapted for countercurrent exchange; small veins surround arteries transporting blood from the body...
    108 KB (12,932 words) - 11:36, 24 June 2025
  • Thumbnail for Shell-and-tube heat exchanger
    in order that the bundle is still removable for maintenance. Countercurrent heat exchangers are most efficient because they allow the highest log mean temperature...
    18 KB (2,260 words) - 06:46, 1 March 2025
  • cracking or breakdown of materials.[citation needed] Countercurrent exchange Economizer Heat exchanger Hot blast Recuperator desalination – some thermal...
    12 KB (1,676 words) - 23:42, 20 December 2024
  • Thumbnail for Reindeer
    into the legs is cooled by blood returning to the body in a countercurrent heat exchange (CCHE), a highly efficient means of minimizing heat loss through...
    204 KB (22,170 words) - 06:08, 15 June 2025
  • Thumbnail for Baleen whale
    veins as it travels back into the core. This is otherwise known as countercurrent exchange. To counteract overheating while in warmer waters, baleen whales...
    117 KB (12,817 words) - 11:38, 9 June 2025
  • Thumbnail for Glomerulus (kidney)
    loop of Henle and participate in the maintenance of the medullary countercurrent exchange system. The filtrate that has passed through the three-layered...
    17 KB (1,804 words) - 16:30, 28 October 2024
  • Parallel counter-flowing arteries and veins characteristic of countercurrent exchange units are present in the dorsal fins, flukes, and flippers of cetaceans...
    124 KB (15,306 words) - 16:52, 23 May 2025
  • Thumbnail for Kidney
    transport out of most of the ascending limb. In addition, passive countercurrent exchange by the vessels carrying the blood supply to the nephron is essential...
    66 KB (7,353 words) - 16:50, 14 June 2025
  • Thumbnail for Urine
    Solvent drag Sodium Chloride Urea Glucose Oligopeptides Protein Filtration Renal blood flow Ultrafiltration Countercurrent exchange Filtration fraction...
    46 KB (5,493 words) - 06:13, 20 June 2025
  • Thumbnail for Bird feet and legs
    to veins before reaching the feet. Such a mechanism is called countercurrent exchange. Gulls can open a shunt between these vessels, turning back the...
    27 KB (2,621 words) - 15:52, 26 May 2025
  • Thumbnail for Bombus vosnesenskii
    the countercurrent exchange of heat in the petiole retains most of the energy in the thorax. When the ambient temperature is high, the countercurrent exchange...
    20 KB (2,517 words) - 07:53, 1 June 2025
  • Thumbnail for American flamingo
    the American flamingo has highly vascularized feet that use a countercurrent exchange system in their legs and feet. This method of thermoregulation...
    59 KB (7,203 words) - 09:13, 24 May 2025