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Membrane Oxygenators: They are more physiological and are similar to natural lungs. There is separation of blood and gas by membrane across which gas exchange takes place. There are two types. (1) True membrane, (2) Micro porous membrane oxygenators:
i) True Membrane Oxygenator: There is no contact between blood and gas at any time. It is more expensive and needs larger priming volume.
ii) Micro Porous Membrane Oxygenator: At the beginning of perfusion, there is containing between blood and gas across the micro pores. In a short lime, protein coaling of micro pores occurs, severing direct contact. However after several hours of use, he functional capacity of the membrane decreases. So they are not useful for prolonged use as in extra corporeal membrane oxygenator (ECMO),
Mechanism of Stomatal Opening It has been known for over a century that stomata open because of reversible turgor changes in the guard cells. Stomata open when turgor in the g
Explain how salivary amylase works on foods like crackers
Define senescence Explain the 'programmed senescence theory' of ageing.
Define Stage - Parts of the Microscope? It is a fixed platform positioned about halfway up the arm and provide surface for keeping the slide. Slide is held in position either b
Which of the following experimental steps permitted Hershey and Chase to verify that the transforming agent in a bacteriophage is DNA as well? A. Phage particles were mixed wit
sodium and potassium
Pollination Many flowering plants rely on animals such as bees, butterflies, moths, wasps, beetles, birds, and bats for pollination to produce fruit. Thirty percent of our food
State the term Autopsy data - Brain patient Autopsy data are not always entirely usable for validation purposes, in that numerous changes may have taken place in the patient's
Determine the representation of the Nucleus In all eukaryotic cells, the nucleus represents the most prominent and conspicuous organelle of the cell, and is generally seen as a
Which of the following serves as an actuating signal, or as part of an actuating signal, in a positive feedback system? A. Blood plasma levels of PTH (Parathryroid Hormone).
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