BIO220H1 Lecture Notes - Posterior Pituitary, Osmoreceptor, Cardiac Output

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31 Jul 2011
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BIO220H1 Full Course Notes
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BIO220H1 Full Course Notes
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Brain and heart threatened so negative feedback to maintain map baroreceptor reflex. Untrained burning sensation in lungs due to turbulence receptors not adjusting to receptors well. Transit time not enough for adeq. absorption = runners diarrhea. Kidney and liver not specific to vital organs and viscera. No change in co just redistribution of blood in resting condition www. notesolution. com. 1st 2/3 race vital organs have blood. Blood vol. decreases as a result of sweating = can"t provide constriction inc. blood supply in kidney and liver compromised and not sustainable. Urine production achieve in reduction in gfr and urine flow. Sense by osmoreceptors inc. release of vasopressin from posterior pituitary gland. Vol. dehydration 2/3 fluid intake first and more after. Degree and speed of decline det. by body to adapt to stresses. Muscle fatigue lactic acid chapter 12 h+ responsible for fatigue in several ways: Severe hypothermia and dehydration lead to reduction in renal and hepatic blood flow no gluconeogenesis in brain affecting brain.

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