The regulation of sodium
involves hypothalamic osmoreceptor detection of ion concentration
is due to specific sodium receptors in the hypothalamus
is linked to blood pressure
involves aldosterone, a hormone that increases sodium excretion in the kidneys
The Correct Answer is C
A. Involves hypothalamic osmoreceptor detection of ion concentration: Osmoreceptors detect osmolarity (solute concentration), not specifically sodium regulation.
B. Is due to specific sodium receptors in the hypothalamus: There are no specific sodium receptors; sodium regulation is largely hormonal.
C. Is linked to blood pressure: Sodium levels affect blood volume and pressure through water retention. The renin-angiotensin-aldosterone system (RAAS) helps regulate both sodium and blood pressure.
D. Involves aldosterone, a hormone that increases sodium excretion in the kidneys: Aldosterone increases sodium reabsorption, not excretion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"dropdown-group-1":"A"}
Explanation
A. Stomach: The stomach mixes the food with gastric juices, converting the solid bolus into a semi-liquid substance called chyme.
B. Small intestine: The small intestine receives chyme but does not liquefy the bolus.
C. Mouth: The mouth forms the bolus through mastication and saliva, but it does not produce chyme.
D. Esophagus: The esophagus only transports the bolus via peristalsis and plays no role in liquefying it.
Correct Answer is A
Explanation
A. More carbonic acid is formed: The bicarbonate ion (HCO₃⁻) binds with H⁺ from HCl, forming carbonic acid (H₂CO₃), which helps buffer the drop in pH.
B. Hydrochloric acid is neutralized by sodium hydroxide: Sodium hydroxide is not involved in this buffer system; this describes a basic chemical reaction, not physiological buffering.
C. Carbonic acid is converted into bicarbonate: The reverse happens when acid is added-bicarbonate becomes carbonic acid.
D. The blood plasma pH is reduced: The buffer system prevents a large drop in pH by neutralizing the added acid.
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