ATI RN
Urinary System Test Questions And Answers Questions
Question 1 of 5
Failure of complete union between the ureteric bud and the metanephric cap leads to:
Correct Answer: A
Rationale: Incomplete ureteric bud-metanephric fusion causes double ureter not polycystic, pelvic, lobulation, or horseshoe (fusion anomalies). This defines congenital defect, critical for urology, contrasting with other malformations.
Question 2 of 5
The arterial supply of urinary bladder is derived from all of the following arteries EXCEPT:
Correct Answer: D
Rationale: Bladder supply includes superior/inferior vesical, middle rectal, and obturator not inferior rectal (anus). This corrects vascular anatomy, vital for pelvic surgery, contrasting with rectal supply.
Question 3 of 5
The functional unit of the kidney is called a
Correct Answer: B
Rationale: Nephron (filtration to excretion) is the functional unit not glomerulus (part), corpuscle (subset), or calyx (collecting). This defines renal unit, key for physiology, contrasting with components.
Question 4 of 5
The apex of the renal pyramid is called the:
Correct Answer: C
Rationale: Renal papilla (pyramid apex) drains into calyces not calyx, pelvis, or ureter. This specifies medullary tip, key for collection, contrasting with collecting structures.
Question 5 of 5
Somatic motor neurons must be ________ to relax the external urethral sphincter to allow urination.
Correct Answer: A
Rationale: Stimulating somatic neurons relaxes the external sphincter (voluntary) not inhibiting (contracts). This defines micturition control, key for continence, contrasting with inhibition.