Intermediate Urinary System Quiz

Q1. Which spinal levels give rise to the pelvic splanchnic nerves that provide parasympathetic innervation to the bladder?

• S2 to S4
• L4 to S1
• T5 to T9
• T1 to T4

Q2. Parasympathetic stimulation of the urinary bladder produces which principal muscular response?

• Contraction of the piriformis
• Contraction of the external anal sphincter
• Contraction of the detrusor muscle
• Relaxation of the detrusor muscle

Q3. Sympathetic fibers reaching the urinary bladder travel primarily through which autonomic plexus?

• Cervical plexus
• Lumbar plexus only
• Brachial plexus
• Inferior hypogastric plexus

Q4. Which arteries provide the principal arterial supply to the superior portion of the urinary bladder?

• Superior gluteal arteries
• Superior vesical arteries
• Superior rectal arteries
• Inferior mesenteric arteries

Q5. The vesical venous plexus drains primarily toward which veins?

• Great saphenous veins
• Inferior vena cava directly
• Internal iliac veins
• Portal vein

Q6. What is the anatomical significance of the oblique intramural course of the ureters through the bladder wall?

• It prevents blood from entering the bladder
• It helps prevent vesicoureteral reflux
• It produces urine
• It forms the external urethral sphincter

Q7. In the male pelvis, which organ lies immediately inferior to the neck of the urinary bladder?

• Epididymis
• Sigmoid colon
• Testis
• Prostate

Q8. In the female pelvis, the urinary bladder lies directly anterior to which reproductive organ?

• Broad ligament
• Uterine tube
• Ovary
• Vagina

Q9. Which nerve provides the major somatic motor innervation to the external urethral sphincter?

• Femoral nerve
• Vagus nerve
• Pudendal nerve
• Obturator nerve

Q10. Which structure marks the inferior angle of the bladder trigone?

• Internal urethral orifice
• Urachus
• External urethral orifice
• Seminal colliculus