12 Questions
What type of joints do the ribs form on each side of the thoracic vertebrae?
Synovial joints
Which ribs articulate with the adjacent body, body above, and disc between them to form the costovertebral joint?
Ribs 2 through 9
Which of the following ribs articulate only with the corresponding body?
Ribs 1, 10, 11, and 12
What do ribs 1 through 10 also articulate with to form the costotransverse joint?
Their same-level transverse process
What reinforces both the costovertebral and costotransverse joints?
Ligaments
Which ribs form synovial joints with the sternum anteriorly?
Ribs 2 through 7
What do the cartilages of ribs 8 through 10 articulate with?
The cartilage above
How do the ribs move during elevation and depression?
Pivoting motion
What is the main function of the rib cage?
To protect the lungs
What role do the ribs play in respiration?
They allow for lung expansion
Which of the following is not a synovial joint formed by the ribs?
Immovable joint with the adjacent body
What is the significance of the mobility of the ribs?
It allows for lung expansion
Study Notes
- The ribs form two synovial joints on each side of the thoracic vertebrae.
- Ribs 2 through 9 articulate with the adjacent body, body above, and disc between them to form the costovertebral joint.
- Ribs 1, 10, 11, and 12 articulate only with the corresponding body.
- Ribs 1 through 10 also articulate with their same-level transverse process to form the costotransverse joint.
- Both joints are reinforced by strong ligaments.
- Anteriorly, ribs 2 through 7 form synovial joints with the sternum.
- The cartilages of ribs 8 through 10 articulate with the cartilage above, and ribs 11 and 12 are free-floating.
- Elevation and depression of the ribs occur through a pivoting motion.
- The rib cage protects vital organs and contributes to the stability of the thoracic spine.
- Mobility of the ribs allows for lung expansion and plays a critical role in respiration.
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