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study module 25
Terms in this set (24)
What is an electrolyte?
Ions released through the dissociation of inorganic compounds
Electrolyte balance requires matching the gain of electrolytes from your diet with the loss of electrolytes. Which of the following is NOT a way your body removes electrolytes?
What would happen if you ate a large quantity of salty potato chips without drinking anything?
secretion of ADH would increase
the pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis, often used to express the concentration of the solution.
What are the principal ions in the extracellular fluid (ECF)?
Sodium, chloride, and bicarbonate
Sodium ions enter the ECF by crossing the digestive epithelium via
active transport and diffusion
Potassium ions are found in the highest concentrations in which of the following fluid compartments?
What effect does prolonged sweating have on sodium ion levels?
?a loss of sodium form the extra cellular fluid
Fluid and electrolyte balance is maintained by receptors that directly measure___________________.
Overall osmotic pressure
Which is the most abundant cation in the ICF? Which is the most abundant in the ECF?
ICF = Potassium
ECF = Sodium
Angiotensin II produces a coordinated elevation in the extracellular fluid volume by all of the following mechanisms except_________________.
causing the release of ADH
Which of the following would not be associated with a sensation of increased thirst?
Decrease in the production of ADH
Increase in the production of ADH
Increase in renin secretion
Increase in the production of angiotensin II
-decrease in the production of ADH
Which of the following is true regarding antidiuretic hormone (ADH) and its role in regulating fluid and electrolyte balance?
ADH stimulates water conservation by the kidneys and helps to concentrate the urine.
What would be the response of the body to an increase in ECF volume if you were to drink a large quantity of a sports drink?
Natriuretic peptides would be released by cardiac muscle cells.
Increased water and sodium loss in the urine
The most common problems with electrolyte balance are caused by __________
an imbalance between sodium gains and losses
What is the term for an abnormally high concentration of sodium in the ECF?
Whenever the rate of sodium intake or output changes, there is a corresponding gain or loss of water that tends to _________
Important homeostatic adjustments occur in response to changes in __________
plasma volume or osmolarity
Which of the following accurately describes the role of aldosterone in fluid and electrolyte balance
Aldosterone is secreted in response to an increasing K+ or decreasing Na+ level in the blood
regulate water balance
hormone secreted by the kidney that raises blood pressure
All of the homeostatic mechanisms that monitor and adjust the composition of body fluids respond to changes in the __________.
extra cellular fluid
Which of the following hormones causes the conservation of sodium in the kidneys?
Renin is released in response to all of the following except ____________
a decrease in K+ concentration in the renal circulation
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