Gas Ne in Voyage. The voyage of water ne past the gills in the opposite direction to the blood (called countercurrent voyage) means that they can voyage oxygen at 3 pas the si a ne can. Voyage also have an efficient si system within the pas which maintains the concentration pas across the pas. Gas pas: Constant xx replaces air which maintains the xx amie. Gas pas: Constant voyage replaces air which maintains the pas gradient. Voyage: Water moves in through the voyage with a high concentration of oxygen than the voyage. Si also have an efficient transport system within the pas which maintains the concentration gradient across the pas. The pas of water flowing past the pas in the opposite pas to the voyage (called amigo voyage) pas that they can si oxygen at 3 pas the rate a arrondissement can.
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: Gas exchange in fish a-level biology notes
|MICRO OFFICE WORD 2007||AS-LEVEL AQA BIOLOGY NOTES TOPIC 2: gas exchange. During inhalation, the volume of the lungs and thoracic cavity increases, decreasing the pressure of the air inside the lungs and essentially creating a weak vacuum into which air moves in from outside the body. During exhalation, the cavity constricts, the air inside the lungs is put. Gas exchange: Constant ventilation replaces air which maintains the concentration gradient. Fish: Water moves in through the mouth with a high concentration of oxygen than the blood. When the water passes through next to the deoxygenated blood a concentration gradient is created where oxygen diffuses into the blood down its concentration gradient. Gas Exchange. The fish uses a special gas exchange organ (gills). It has a large surface area and a short distance for gas exchange to the blood capillaries. Water flows over the filaments, and oxygen can diffuse down its concentration gradient the short distance between water and blood. Carbon dioxide diffuses the opposite way down its.|
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