ATI RN
Urinary System Test Questions And Answers Questions
Question 1 of 5
Peritubular capillary network of the kidney arises from
Correct Answer: B
Rationale: Peritubular capillaries stem from efferent arterioles not afferent, intralobular, interlobular, or arcuate. This specifies post-glomerular flow, critical for reabsorption, contrasting with pre-glomerular sources.
Question 2 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 3 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 4 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.
Question 5 of 5
Production of urine to modify plasma makeup is the result of ________.
Correct Answer: D
Rationale: Urine forms via filtration, reabsorption (absorption), and secretion all apply. This encompasses urine production, critical for homeostasis, contrasting with single processes.