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Chapter 26
Fluid, Electrolyte, Acid-Base Balance
| Question | Answer |
|---|---|
| which compartment has the largest volume of water? | ICF |
| the most intracellular electrolyte is | potassium |
| the most abundant extracellular electrolyte is | sodium |
| what hormone helps excrete & get rid of sodium? | ANP |
| which compartment has the smallest volume of water? | plasma |
| the type of fluid that varies the most is | water loss in urine |
| the ___ drains blood from the glomereular capillaries | efferent arteriole |
| least abundant ion in interstitial fluid? | calcium |
| driving force for water intake? | thirst mechanism |
| osmolality measures the body's... | water balance & electrolytes |
| this type of water loss is unavoidable. water leaves the body via skin or lungs. | obligatory water loss |
| sensible water loss consist of.... | sweat, urine, feces |
| baroreceptors detect... | pressure changes |
| rising BP causes vasodilation which leads to... | water loss |
| lowering BP causes vasoconstriction which... | conserves sodium & water |
| female sex hormones increase renal retention of sodium. they also... | enhance sodium & water excretion in urine |
| which hormone promotes sodium reabsorption to maintain blood volume & pressure? | aldosterone |
| ANP inhibits which hormones release? | aldosterone. ADH. renin |
| excess potassium can .... | decrease action potential - leads to depolarization |
| not enough potassium can cause ___ | nonresponsiveness |
| potassium is required for... | neuromuscular junction |
| too much or too little potassium can... | interrupt heart's electrical activity - can lead to death |
| reabsorption of calcium occurs in which tubule? | DCT |
| calcium is regulated by ___ | PTH |
| what is alkalosis? | blood pH over 7.45 |
| when a blood pH is 7.35 and under, it is referred to as_ | acidosis |
| how do we regulate acidosis & alkalosis? | chemical buffers. brain stem respiratory centers. renal mechanisms. |
| chemical buffers are activated... | instanteously |
| how long does it take brain stem respiratory centers to activate? | within minutes |
| this type of regulation takes a couple of hours to a day to regulate.. | renal mechanism |
| the renal mechanism is able to make.... | the biggest changes |
| respiratory acidosis has... | low pH & low CO2 partial pressures |
| respiratory alkalosis has a ___ and __ | high pH & high CO2 partial pressure |
| when too much carbon dioxide has been accumulated...it is known as ___ | respiratory acidosis |
| shallow breathing is apart of respiratory __ | acidosis |
| when you exhale too much air too quickly, it can lead to hyperventilation which is referred to as ___ ___ | respiratory alkalosis |
| this type of pH imbalance has a low pH and bicarbonate level. | metabolic acidosis |
| in metabolic alkalosis, the pH and bicarbonate levels are... | high |
| ___ and __ are causes of metabolic alkalosis | vomiting - ingestion of antacids |
| excess alcohol ingestion, excessive loss of HCO3, accumulation of lactic acid, ketosis, kidney failure happens due to the result of... | metabolic acidosis |