BIOLOGY 3XL3 Chapter 11: Water and Salt Excretion
4 Feb 2017
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The root effect appears to be an adaptation, due to specialized hemoglobin subunits to secrete. O2 at high po2 into the swim bladder (for buoyancy) and/or eye (o2 secretion for retina) Humans: to transport oxygen, hemoglobin binds oxygen and increases carrying capacity: binding is a produce to partial pressure rest is cooperative. Teleost: reduces the overall carrying capacity: when fishes experience low ph makes affinity for oxygen lower (protons up) Physoclistous sb: connected to the digestive system and is lost in most advanced fish. Physotomous sb: connected to gut by a pneumatic duct (e. g. eels) Root effect: change in carrying capacity: po2 i(cid:374)(cid:272)reased (cid:271)y bohr shift, root effe(cid:272)t a(cid:374)d (cid:862)salti(cid:374)g out(cid:863) And lac- (o2 solubility declines with increased. [by hco3 salinity): gas gland: glycolysis and pentose p shunt acidifies blood locally, loss of co2 to arterial blood leads to hbo2 binding and low. Volume at 10m and 1/10 at 100m depth. Co2 production by pentose phosphate shunt pathway.
