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12 Cards in this Set
- Front
- Back
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What is the role of the kidneys in fluid balance
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Extracellular fluid regulation. Extracellular electrolyte regulation-selective-retention and secretion. Regulates pH of extracellular fluid -retention of H ions. Extretes waste and toxins
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Kidneys: Regulates ECF volume by
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Regulates ECF volume by selective retention and excretion of body fluids.
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Regulates ECF electrolytes levels by:
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Regulates ECF electrolytes levels by selective retention of needed substances and excretion of unneeded substances.
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Regulates pH of ECF by
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Regulates pH of ECF by hydrogen ions.
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Regulation of Body Fluids compsition and volume by- Kidney
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Exretes metabolic wates and toxic subatances. The kidneys respond to alteration in blood volume.
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Role of the lungs in fluid balance
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Remove about 300 ml of H2O daily through exhalation maintains acid/base balance.
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Normal respirations
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1) water evaporates during respiration 2) 300 ml daily 3) regulates acid/base balance. oxygen, carbon dioxide
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Abnormal respiration
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Variable losses
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Role of the endocrine glands in fluid balance- Hypothalamus
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hypothalamus secretes ADH and it is stored in the pituitary gland.When blood volume drops or osmolality increases ADH is released from the pituitary gland ADH maintains osmotic pressure of cells by controlling retention and excretion of water by kidneys and regulation of blood volume.
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Role of the endocrine gland in fluid balance - Adrenal glands
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Aldosterone and cortisol; Adrenal gland secretes aldosterone. increase causes NA (thus H2O) retention and K loss. Adrenal gland secretes cortisol. Large amounts can also produce NA + H2O retention and K loss.
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Role of the endocrine glands in fluid balance- Parathroid gland
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Regulates CA and phosphate balance. Acts on renal tubules to reabsorb calcium
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Effects of aging on F&E regulation
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1) decreased renal and respiratory function. 2) body fluid ration 3) medications 4)cardiovascular - decreased reserve, potential fluid overload 5) altered thrist mechanism 6) atypical responses - confusion, skin tugor
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