Intermediate Male Urethra Quiz

Q1. Which sequence correctly lists the parts of the male urethra from proximal to distal?

• Spongy, membranous, prostatic, intramural
• Intramural, prostatic, membranous, spongy
• Membranous, prostatic, intramural, spongy
• Prostatic, intramural, spongy, membranous

Q2. Which prominent elevation is found on the posterior wall of the prostatic urethra?

• Arcuate line
• Urethral crest
• Interureteric crest
• Pectinate line

Q3. What is the rounded elevation on the urethral crest called?

• Seminal colliculus
• Ureteric fold
• Navicular fossa
• Anal column

Q4. Which small blind pouch opens on the seminal colliculus?

• Ureter
• Prostatic utricle
• Epididymal duct
• Seminal vesicle

Q5. Where do most prostatic ducts open into the prostatic urethra?

• Prostatic sinuses
• External urethral orifice
• Navicular fossa
• Prostatic utricle

Q6. Where do the ducts of the bulbourethral glands open?

• Proximal spongy urethra
• Prostatic urethra
• Prostatic utricle
• Intramural urethra

Q7. Which nerve provides the major somatic motor supply to the external urethral sphincter?

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

Q8. Which arteries are important suppliers of the spongy urethra?

• External carotid artery
• Superior mesenteric artery
• Inferior mesenteric artery
• Branches of the internal pudendal artery

Q9. Which portion of the male urethra passes through the perineal membrane?

• Navicular fossa
• Prostatic urethra
• Intramural urethra
• Membranous urethra

Q10. Which structure helps prevent retrograde passage of semen into the urinary bladder during ejaculation?

• Puborectalis
• Bulbospongiosus alone
• Smooth muscle at the bladder neck
• External anal sphincter