Intermediate Levator Ani Quiz

Q1. Which component of levator ani arises from the pubis and forms a U-shaped sling behind the anorectal junction?

• Puborectalis
• Iliococcygeus
• Obturator internus
• Coccygeus

Q2. Contraction of puborectalis helps maintain continence by preserving which anatomical feature?

• Anorectal angle
• Pelvic inlet angle
• Lumbosacral angle
• Subpubic angle

Q3. Which component of levator ani arises substantially from the tendinous arch and ischial spine?

• Puborectalis
• Bulbospongiosus
• External anal sphincter
• Iliococcygeus

Q4. The tendinous arch of levator ani is a thickening of which fascia?

• Superficial perineal fascia
• Thoracolumbar fascia
• Transversalis fascia
• Obturator fascia

Q5. What is the levator hiatus?

• An opening between the medial portions of levator ani
• A gap in the inguinal ligament
• A canal within obturator internus
• An opening through the sacrum

Q6. Which structure passes through the levator hiatus in both males and females?

• External iliac artery
• Obturator nerve
• Urethra
• Sciatic nerve

Q7. Which structure passes through the levator hiatus specifically in females?

• Uterine tube
• Vagina
• Ovarian artery
• Ureter

Q8. What happens to puborectalis during defecation?

• It pulls the coccyx posteriorly
• It contracts maximally to close the rectum
• It relaxes, allowing the anorectal angle to straighten
• It closes the ureters

Q9. Why is resting tone of levator ani important?

• It keeps the hip joint extended
• It prevents movement of the sacroiliac joints
• It maintains arterial pressure in the legs
• It provides continuous support for pelvic viscera

Q10. Which statement best describes the relationship between levator ani and pelvic continence mechanisms?

• It has no relationship to continence
• It controls continence by constricting the internal iliac arteries
• It controls continence solely by closing the ureters
• It supports pelvic outlets and contributes to urinary and fecal continence