Advanced Perineal Fascia Quiz

Q1. A straddle injury ruptures the spongy urethra and deep fascia of the penis. Where can extravasated urine spread?

• Cranial cavity
• Thigh and popliteal fossa only
• Scrotum, penis, and lower anterior abdominal wall
• Thoracic cavity

Q2. Why does urine from a ruptured spongy urethra generally fail to spread into the thigh?

• The femoral nerve absorbs the urine
• The inguinal canal drains the urine into the abdomen
• The thigh has no potential fascial spaces
• Membranous superficial fascia attaches to the fascia lata

Q3. Why does extravasated urine within the superficial perineal pouch generally fail to spread posteriorly into the anal triangle?

• Colles fascia is firmly attached posteriorly
• The rectum forms a complete bony barrier
• The anal triangle contains no connective tissue
• The coccyx absorbs the fluid

Q4. A fluid collection deep to Colles fascia extends superiorly onto the anterior abdominal wall. Beneath which fascial layer would it continue?

• Thoracolumbar fascia
• Transversalis fascia
• Parietal peritoneum
• Scarpa fascia

Q5. If Buck fascia remains intact after a limited injury to the penile urethra, what effect does it have on urine extravasation?

• It causes urine to enter the ureters
• It can initially confine urine around the penile erectile tissues
• It directs urine into the peritoneal cavity
• It directs urine immediately into the thigh

Q6. Which fascial continuity explains why blood or urine may spread from the superficial perineum into the lower anterior abdominal wall?

• Buck fascia continuing as parietal peritoneum
• Endopelvic fascia continuing as dura mater
• Colles fascia continuing as Scarpa fascia
• Obturator fascia continuing as pleura

Q7. Which fascial sheet is critical in defining both the superficial and deep perineal compartments?

• Scarpa fascia
• Perineal membrane
• Parietal peritoneum
• Camper fascia

Q8. A collection in the superficial perineal pouch is prevented from spreading laterally by attachment of Colles fascia primarily to which structures?

• Femoral condyles
• Ischiopubic rami
• Sacral foramina
• Iliac fossae

Q9. Which combination correctly describes the superficial perineal pouch?

• Colles fascia superficially and perineal membrane deeply
• Buck fascia superficially and obturator fascia deeply
• Peritoneum superficially and Scarpa fascia deeply
• Pelvic diaphragm superficially and skin deeply

Q10. Which statement best integrates the clinical anatomy of perineal fascia?

• Fascial attachments and continuities define compartments and control pathways of fluid spread
• Perineal fascia consists entirely of skeletal muscle
• Perineal fascia has no influence on the spread of fluid
• All perineal fascial layers are isolated from abdominal fascia