BIOL373 Chapter Notes -Ureter, Homeostasis, Reabsorption
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27 Mar 2014
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Urine: fluid waste produced by the kidneys (cid:224) reflects the functioning of the body: first step to examining is to determine its colour, dark yellow (concentrated, pale straw (dilute, red (presence of blood, black (hemoglobin metabolites, clarity, frosh, smell, taste. Functions of the kidneys: most important: homeostatic regulation of the water and ion content of the blood, salt and water balance or fluid and electrolyte balance, maintain normal blood concentrations of ions and water by balancing intake of those substances with their excretion in the urine, obeying the principle of mass balance, six general areas of kidney functions: Production of hormones: not endocrine glands but play important roles in the three endocrine pathways, synthesize erthropoletin: cytokine hormone that regulates rbc synthesis, release renin: enzyme that regulates the production of hormones involved in sodium balance and blood pressure homeostasis, renal enzymes help convert vitamin d3 into a hormone that regulates ca2+ balance.
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