#1
Which hormone regulates water reabsorption in the kidneys?
Antidiuretic hormone (ADH)
ExplanationADH regulates water reabsorption in the kidneys, helping to concentrate urine and maintain fluid balance.
#2
What is the primary function of potassium in the body?
Nerve transmission
ExplanationPotassium plays a crucial role in nerve transmission, aiding in electrical signal conduction.
#3
What is the primary function of antidiuretic hormone (ADH) in the body?
Increasing water reabsorption
ExplanationADH primarily increases water reabsorption in the kidneys, helping to conserve water and maintain fluid balance.
#4
Which of the following is a potential complication of hypomagnesemia?
Cardiac arrhythmias
ExplanationHypomagnesemia can lead to cardiac arrhythmias, highlighting its importance in maintaining normal cardiac function.
#5
In hypermagnesemia, what clinical manifestation is likely to be observed?
Muscle weakness
ExplanationHypermagnesemia is associated with muscle weakness, reflecting the impact of elevated magnesium levels on neuromuscular function.
#6
Which of the following medications is classified as a loop diuretic?
Furosemide
ExplanationFurosemide is a loop diuretic that inhibits sodium reabsorption in the loop of Henle, promoting diuresis.
#7
In hyponatremia, there is a deficiency of which electrolyte in the body?
Sodium
ExplanationHyponatremia involves a low sodium level in the body, leading to potential water imbalance.
#8
Which of the following is a potential complication of hyperkalemia?
Cardiac arrhythmias
ExplanationHyperkalemia can lead to cardiac arrhythmias, posing a risk to heart rhythm.
#9
What is the mechanism of action of thiazide diuretics?
Inhibition of sodium reabsorption in the distal tubule
ExplanationThiazide diuretics work by inhibiting sodium reabsorption in the distal tubule of the nephron, promoting diuresis.
#10
What is the primary function of the renin-angiotensin-aldosterone system (RAAS) in the body?
Regulating blood pressure and fluid balance
ExplanationThe RAAS system plays a crucial role in regulating blood pressure and fluid balance by influencing vasoconstriction and aldosterone release.
#11
Which condition is characterized by excess fluid in the interstitial spaces of the body?
Edema
ExplanationEdema is the accumulation of excess fluid in the interstitial spaces, causing swelling.
#12
Which electrolyte imbalance is associated with muscle weakness, constipation, and ECG changes?
Hypokalemia
ExplanationHypokalemia is characterized by low potassium levels, leading to muscle weakness, constipation, and potential ECG abnormalities.
#13
What is the primary role of aldosterone in the body?
Regulating blood pressure
ExplanationAldosterone plays a key role in regulating blood pressure by influencing sodium and water balance in the kidneys.
#14
Which of the following conditions is characterized by an excess of both sodium and water in the body?
Hypervolemia
ExplanationHypervolemia involves an excess of both sodium and water in the body, often leading to fluid overload.
#15
What is the primary site of action for thiazide diuretics in the nephron?
Distal tubule
ExplanationThiazide diuretics primarily act on the distal tubule of the nephron, inhibiting sodium reabsorption.