Advanced Male Urethra Quiz

Q1. A straddle injury causes rupture of the urethra within the bulb of the penis. Which portion is most likely injured?

• Ureter
• Prostatic urethra
• Intramural urethra
• Spongy urethra

Q2. A severe pelvic fracture causes urethral disruption near the prostate and perineal membrane. Which portion is most closely associated with this injury pattern?

• Ureterovesical junction
• Distal spongy urethra only
• Membranous urethra and prostatomembranous region
• Navicular fossa only

Q3. Which portion of the male urethra is surrounded by erectile tissue and is therefore classified as part of the anterior urethra?

• Intramural urethra
• Prostatic utricle
• Spongy urethra
• Prostatic urethra

Q4. Which anatomical feature must be considered when advancing a catheter through the male urethra?

• Passage through the obturator canal
• Communication with the ureters
• Changes in urethral direction and caliber
• Direct passage through the rectum

Q5. At which location is the male urethral lumen normally narrowest?

• Prostatic sinus
• Prostatic urethra
• Navicular fossa
• External urethral orifice

Q6. A lesion of the pudendal nerve would most directly impair which urethral mechanism?

• Sperm production
• Voluntary contraction of the external urethral sphincter
• Ureteric peristalsis
• Secretion from the prostate

Q7. Why can enlargement of the prostate interfere with urination?

• The prostate directly contracts the external urethral orifice
• The prostatic urethra passes through the prostate and can be compressed
• The prostate surrounds the kidneys
• The prostate normally closes both ureters

Q8. During ejaculation, where do the ejaculatory ducts deliver their contents?

• Navicular fossa
• External urethral orifice
• Membranous urethra at the perineal membrane
• Prostatic urethra near the seminal colliculus

Q9. A rupture of the spongy urethra accompanied by disruption of Buck fascia allows urine to spread primarily into which region?

• Superficial perineal space with possible spread into the scrotum and lower anterior abdominal wall
• Greater sciatic foramen only
• Retroperitoneal space around the kidneys only
• Thoracic cavity

Q10. Which statement best integrates the anatomy and function of the male urethra?

• It transports urine from the kidneys to the bladder
• It is a shared urinary and reproductive passage with distinct anatomical regions from the bladder to the glans
• It is composed entirely of erectile tissue without a mucosal lumen
• It is exclusively a reproductive duct connecting the testes directly to the exterior