Q4 Thoracic vertebral joints

Question 1

State Costovertebral joint type

Answer 1

synovial plane joint

Question 2

Name Costovertebral joint articular surfaces

Answer 2

Head of rib (convex)
Demifacet on upper border of corresponding vertebral pedicle and body (larger, concave)
Demifacet on lower border of vertebral body of vertebra above (smaller, concave)
Intervening intervertebral disc

Question 3

State Costotransverse joint type

Answer 3

synovial plane joint

Question 4

Name Costotransverse joint articular surfaces

Answer 4

Articular facet, Anterior aspect of transverse process of vertebra
Articular aspect of the Tubercle of rib (posteromedial aspect)

Question 5

Briefly describe movement of ribs at Costotransverse and Costovertebral joints

Answer 5

Rib is raised and lowered by twisting, sliding and gliding movement
Posterior ends of ribs held securely by ligaments and joints , length of rib amplifies the movement