Which of the following does NOT describe the juxtaglomerular complex?
It regulates the rate of filtrate formation.
Its macula densa cells produce aldosterone.
Its granular cells produce rennin.
It helps control systemic blood pressure.
The Correct Answer is B
A. It regulates the rate of filtrate formation: The juxtaglomerular complex (JGC) helps control glomerular filtration rate (GFR) by monitoring filtrate content and flow.
B. Its macula densa cells produce aldosterone: Macula densa cells sense sodium concentration but do not produce aldosterone. Aldosterone is secreted by the adrenal cortex.
C. Its granular cells produce renin: Granular (juxtaglomerular) cells release renin in response to low blood pressure or sodium.
D. It helps control systemic blood pressure: Through renin release and the RAAS system, the JGC helps regulate blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
True: When the ECF becomes hypertonic due to water loss (e.g., dehydration), water moves out of the cells into the ECF by osmosis, causing cellular shrinkage.
Correct Answer is B
Explanation
A. Terminal sulcus: This is a V-shaped groove on the tongue that marks the division between the anterior and posterior tongue-not related to tongue mobility.
B. Lingual frenulum: This is a fold of mucous membrane under the tongue that may be too short or tight in some children (ankyloglossia or “tongue-tie”), limiting movement. Surgery may involve cutting this to free the tongue.
C. Uvula: The uvula is part of the soft palate and plays a role in speech and swallowing, not tongue movement.
D. Palatine tonsils: These are lymphatic tissues in the oropharynx and have no role in tongue movement.
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