ATI RN
Questions On The Urinary System Questions
Question 1 of 5
The definitive urogenital sinus in male gives rise to:
Correct Answer: D
Rationale: Definitive urogenital sinus forms lower prostatic, membranous, and most spongy urethra not just membranous/spongy; 'all' is correct. This specifies sinus role, key for male urethra, contrasting with limited parts.
Question 2 of 5
As the male urethra leaves the urinary bladder, it is surrounded by the:
Correct Answer: C
Rationale: The prostate gland surrounds the male urethra at bladder exit prostatic urethra (e.g., ~20 cm total). Adrenals are kidney-top not urethra. Bulbourethral glands are distal penile urethra. Hilum is kidney not bladder. Prostate's position distinguishes it, key to male anatomy, unlike other glands or sites.
Question 3 of 5
Where does tubular reabsorption primarily occur?
Correct Answer: D
Rationale: Tubular reabsorption primarily occurs in the PCT ~65-70% of filtrate (e.g., Na , water, glucose). Collecting duct adjusts less volume. Distal tubule fine-tunes smaller role. Capsule filters not reabsorbs. PCT's dominance distinguishes it, critical for bulk reclamation, unlike later or filtration sites.
Question 4 of 5
To increase the reabsorption of water, which parts of the kidney tubules are involved?
Correct Answer: A
Rationale: PCT (~65% water) and collecting duct (ADH-driven) increase water reabsorption e.g., bulk and regulated recovery. Distal tubule adjusts less water focus. Loop sets gradient not ADH-dependent. PCT/collecting synergy distinguishes it, key to water conservation, unlike partial or gradient-focused pairs.
Question 5 of 5
Where is the juxtaglomerular apparatus located?
Correct Answer: C
Rationale: The JGA is between afferent arteriole and distal tubule macula densa/JG cells (e.g., renin release site). Loop is tubular not vascular. Medulla oblongata is brain unrelated. Collecting/PCT lacks JGA wrong. JGA's position distinguishes it, critical for GFR/BP control, unlike tubular or brain errors.