Rib Quiz (Advanced Level)

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

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

Q2. What developmental tissue gives rise to the ribs?

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

Q3. What is cervical rib syndrome?

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

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

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

Q5. Which ribs are most commonly fractured?

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

Q6. What is a flail chest?

• Congenital fusion of ribs
• Dislocation of costal cartilages
• 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?

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

Q8. What kind of joint is the manubriosternal joint?

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

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

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

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

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