BIO 3302 Study Guide - Midterm Guide: Fish Gill, Teleost, Elasmobranchii
13 Dec 2017
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Max o2 storage w myoglobin in musc and more haem in blood. Min o2 use through dive resp, only use for essential tissues. High p, inc bc water column adds p. P in lungs inc w depth, can cause gas bubbles bends. Avoid high gas tension by min gas xcange, dec eq. Dive on exhalation; less gas in lungs, less gas with high tension. Floating rib: collapsed thoracic cage,, dec amount of air in alveoli. Alveoli collapse: pushes air out alveoli, into conducting airways, dec xchange, in humans; ineffectively air gets trapped in alveoli. Peripheral vasoconstriction: tissues not profused w blood, no gas going to tissue, keep p in tissue low. Int homeostasis by osmotic and ionic reg, exrection. Conformer int enviro change with enviro: low e cost but small range of enviro. Regulators keep int enviro const: higher e cost but larger range of enviro. Fw ani cannot conform bc fw is too dilute to support life.
