Intermediate Urinary System Quiz

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

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

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

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

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

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

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

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

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

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

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

• It helps prevent vesicoureteral reflux
• It prevents blood from entering the bladder
• 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?

• Prostate
• Epididymis
• Sigmoid colon
• Testis

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

• Vagina
• Ovary
• Uterine tube
• Broad ligament

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

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

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

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