ATI RN
Urinary System Test Questions And Answers Questions
Question 1 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 2 of 5
Which step in vitamin D production does the kidney perform?
Correct Answer: B
Rationale: Kidneys convert calcidiol to calcitriol (active) not cholecalciferol (liver), storage, or none. This defines renal role, critical for calcium, contrasting with hepatic steps.
Question 3 of 5
The middle layer of the urinary bladder is identified as ___________.
Correct Answer: B
Rationale: Bladder's middle layer is submucosa (connective) not mucosa (inner), muscularis (outer), or sphincter (none). This defines histology, critical for structure, contrasting with other layers.
Question 4 of 5
The one of the functions occurring at the distal convoluted tubule in the kidney is?
Correct Answer: C
Rationale: DCT reabsorbs water (ADH-dependent) not passive H+/K+ secretion (active), or no Na+ (reabsorbed). This specifies fine-tuning, critical for balance, contrasting with secretion myths.
Question 5 of 5
This pressure facilitates filtration while urine is being formed
Correct Answer: C
Rationale: Capillary hydrostatic pressure (~60 mmHg) drives filtration not filtrate (opposes), osmotic (retains), or all. This identifies filtration force, key for GFR, contrasting with opposing pressures.