ATI RN
Questions for Skeletal System Questions
Question 1 of 5
Which one of the following bones is located in the head?
Correct Answer: D
Rationale: The cranium, part of the skull, is located in the head, protecting the brain. The scapula is the shoulder, phalanges are fingers/toes, and tarsals are ankle bones, making 'Cranium' correct.
Question 2 of 5
During 'arm side raises' exercise which involves the shoulder ball and socket synovial joint, which joint action is being used?
Correct Answer: B
Rationale: Arm side raises lift arms laterally (abduction) and lower them (adduction) using the shoulder’s ball-and-socket joint. Extension/flexion is forward/back, rotation is circular, making 'Abduction and Adduction' correct.
Question 3 of 5
Where do osteocytes reside?
Correct Answer: D
Rationale: Osteocytes live in lacunae, cavities within osteon lamellae (compact bone) or trabeculae (spongy bone). Lamellae are layers, endosteum lines cavities, and trabeculae are spongy structures—not residences. Answer is D, per the document.
Question 4 of 5
Which of the following comprise seven bones?
Correct Answer: A
Rationale: Cervical vertebrae number 7 (C1-C7). Carpals are 8 per wrist, cranial bones are 8, lumbar vertebrae are 5. Answer is A, per the document.
Question 5 of 5
What is contained within the medullary canal of a long bone?
Correct Answer: C
Rationale: The medullary canal (cavity) of long bones contains marrow (red in youth, yellow in adults). Trabeculae are in spongy bone, lamellae in compact, cells are in periosteum. Answer is C, per the document.