Intermediate Internal Oblique Quiz

Q1. From which thoracolumbar structure does internal oblique partly arise?

• Prevertebral fascia of the neck
• Endothoracic fascia only
• Thoracolumbar fascia
• Clavipectoral fascia

Q2. To which ribs do superior internal oblique fibers attach?

• Ribs 10 through 12
• First rib only
• Ribs 5 through 7 only
• Ribs 1 through 3

Q3. Between which muscles is the principal neurovascular plane of the lateral abdominal wall?

• Rectus abdominis and linea alba
• Internal oblique and transversus abdominis
• Transversus abdominis and peritoneum only
• External oblique and skin

Q4. Above the arcuate line, what happens to the internal oblique aponeurosis at the rectus sheath?

• It passes only posterior to rectus
• It splits into anterior and posterior laminae
• It passes only anterior at every level
• It does not reach the rectus sheath

Q5. Below the arcuate line, where does the internal oblique aponeurosis pass relative to rectus abdominis?

• Outside the abdominal wall
• Posterior to rectus abdominis
• Through the center of rectus
• Anterior to rectus abdominis

Q6. Which structure may be formed by fused aponeurotic fibers of internal oblique and transversus abdominis?

• Conjoint tendon
• Inguinal ligament
• Internal spermatic fascia
• Median arcuate ligament

Q7. What region of the inguinal canal is reinforced by the conjoint tendon when present?

• Lateral anterior wall only
• Medial posterior wall
• Deep inguinal ring itself
• Entire floor of the femoral canal

Q8. How does the right internal oblique cooperate with the left external oblique?

• They rotate the trunk to the left
• They elevate the scapula
• They rotate the trunk to the right
• They extend the knee

Q9. How does internal oblique contribute to forced expiration?

• By increasing intra-abdominal pressure
• By pulling the diaphragm inferiorly
• By opening the glottis
• By directly expanding lung tissue

Q10. How does the ilioinguinal nerve enter the inguinal canal relative to internal oblique?

• It travels inside the inferior epigastric artery
• It enters only through the deep ring
• It pierces internal oblique
• It passes through the femoral canal