ATI RN
Questions About Skeletal System with Answers Questions
Question 1 of 5
Which type of fracture occurs when the break is ragged due to twisting of the bone?
Correct Answer: D
Rationale: A spiral fracture results from twisting forces, creating a ragged, helical break (e.g., in sports injuries). Compressed fractures shorten bones, comminuted fractures shatter them, and impacted fractures involve ends driven together, making 'spiral' correct.
Question 2 of 5
The lower jaw is formed by the:
Correct Answer: A
Rationale: The mandible, the only movable skull bone, forms the lower jaw and holds lower teeth. The maxillae are upper jaw, vomer is nasal, and zygomatic is cheek, making 'mandible' correct.
Question 3 of 5
The atlas is also known as the vertebrae.
Correct Answer: A
Rationale: The atlas, the first cervical vertebra (C1), supports the skull and allows nodding. C2 is the axis, C7 is lower cervical, and T1 is thoracic, making 'C1' correct.
Question 4 of 5
Identify the bones that form the pectoral girdle.
Correct Answer: A
Rationale: The pectoral girdle, supporting the upper limbs, comprises the scapulae (shoulder blades) and clavicles (collarbones). Radii/ulnae are forearm, coxal bones are pelvic, and tibiae/fibulae are leg, making 'Scapulae and clavicles' correct.
Question 5 of 5
Identify the three regions of the coxal bones.
Correct Answer: D
Rationale: The coxal bone (hip) has three regions: ilium (upper), ischium (lower posterior), and pubis (lower anterior), fusing at the acetabulum. The sacrum is separate, making 'Ilium, ischium and pubis' correct.