Rib Quiz (Advanced Level)

Q1. Which structure runs within the costal groove of a rib?

• Vagus nerve and phrenic nerve
• Thoracic duct
• Subclavian artery and vein
• Intercostal vein, artery, and nerve

Q2. What developmental tissue gives rise to the ribs?

• Intermediate mesoderm
• Sclerotome of paraxial mesoderm
• Ectodermal plate
• Neural crest cells

Q3. What is cervical rib syndrome?

• Congenital fusion of costal cartilage
• Compression of neurovascular structures by an extra rib from C7
• Dislocation of thoracic vertebrae
• Hypertrophy of the first rib

Q4. Which imaging modality is best to assess rib fractures in detail?

• CT scan
• X-ray (PA view only)
• MRI
• Ultrasound

Q5. Which ribs are most commonly fractured?

• Ribs 5 to 9
• Ribs 1 and 2
• Ribs 10 to 12
• Ribs 3 to 4

Q6. What is a flail chest?

• Dislocation of costal cartilages
• Congenital fusion of ribs
• Segment of ribs moves paradoxically due to multiple fractures
• Infection of the pleura with rib involvement

Q7. What muscle lies deep to the costal groove and protects the intercostal neurovascular bundle?

• Serratus posterior muscle
• External intercostal muscle
• Scalene muscle
• Innermost intercostal muscle

Q8. What kind of joint is the manubriosternal joint?

• Synovial joint
• Primary cartilaginous joint (synchondrosis)
• Fibrous joint
• Secondary cartilaginous joint (symphysis)

Q9. Which rib is grooved by the subclavian artery and vein?

• Twelfth rib
• Tenth rib
• Second rib
• First rib

Q10. What is the clinical relevance of the lower border of rib 12?

• It guides access to the kidneys during renal procedures
• It indicates the end of the pleural cavity
• It helps locate the spleen during splenectomy
• It marks the liver’s inferior margin