ATI RN
Questions About the Skeletal System Questions
Question 1 of 5
A freely movable joint is called a joint.
Correct Answer: D
Rationale: Freely movable joints are synovial (e.g., knee) and termed diarthrotic. Cartilaginous joints are slightly movable, so 'Both B and C are correct' reflects the synonymy of synovial and diarthrotic.
Question 2 of 5
The shaft of a long bone is called the diaphysis.
Correct Answer: A
Rationale: The diaphysis is the shaft of a long bone, a cylindrical region of compact bone. This is standard anatomy, making 'True' correct.
Question 3 of 5
A fontanelle is a cavity or hollow space in a bone.
Correct Answer: B
Rationale: A fontanelle is a soft, membranous gap between fetal cranial bones, not a cavity in bone (sinuses are cavities). This makes 'False' correct.
Question 4 of 5
Rib pairs 11 and 12 are the true ribs.
Correct Answer: B
Rationale: True ribs (vertebrosternal, 1-7) attach directly to the sternum. Ribs 11-12 are floating (vertebral), with no sternal connection, making 'False' correct.
Question 5 of 5
The lateral malleolus is a feature of the fibula.
Correct Answer: A
Rationale: The lateral malleolus, the fibula’s distal end, forms the ankle’s outer bump. This is correct, making 'True' the answer.