ATI RN
Urinary System Multiple Choice Questions Questions
Question 1 of 5
What portion of the nephron extends into the medulla?
Correct Answer: A
Rationale: Nephron loop (loop of Henle) extends into medulla not PCT, DCT (cortex), or papillary duct (collecting). This locates medullary segment, critical for concentration, contrasting with cortical parts.
Question 2 of 5
Peristaltic contractions occur in the ________.
Correct Answer: C
Rationale: Ureters use peristalsis to move urine not urethra (voiding), bladder (detrusor), or all. This specifies transport, critical for flow, contrasting with voiding structures.
Question 3 of 5
The functional unit of the kidney is called ________.
Correct Answer: C
Rationale: Nephron is the functional unit not hilus (entry), corpuscle (part), or capsule (subset). This defines renal physiology, critical for function, contrasting with structural parts.
Question 4 of 5
Renin is released in response to ________.
Correct Answer: B
Rationale: Decreased BP triggers renin not increased BP, ACE (downstream), or diuretics (effect). This initiates RAAS, key for pressure regulation, contrasting with high-pressure states.
Question 5 of 5
The primary function of the ascending loop of Henle in the kidney is?
Correct Answer: A
Rationale: Ascending loop actively reabsorbs Na+ (Na+/K+/2Cl- pump) not Cl- alone, or passive K+/urea. This specifies diluting role, key for concentration gradient, contrasting with passive processes.