ATI RN
Skeletal System Questions Questions
Question 1 of 5
Identify a bone of the appendicular skeleton.
Correct Answer: D
Rationale: The appendicular skeleton includes limbs and girdles. The coxal bone (hip) is part of the pelvic girdle, thus appendicular. Cranium, ribs, and sternum are axial skeleton components, making 'coxal bone' correct.
Question 2 of 5
The only movable bone of the skull is the:
Correct Answer: B
Rationale: The mandible (lower jaw) is the only skull bone that moves, via the temporomandibular joint, enabling chewing. The cranium, maxilla, and vomer are fixed, making 'mandible' correct.
Question 3 of 5
The ribs attach to the vertebrae.
Correct Answer: D
Rationale: The 12 pairs of ribs attach to the 12 thoracic vertebrae via costal facets, forming the thoracic cage. Cervical, lumbar, and sacral vertebrae lack rib articulations, making 'thoracic' correct.
Question 4 of 5
The arm bone is also known as the:
Correct Answer: B
Rationale: The humerus is the single bone of the upper arm, from shoulder to elbow. Carpals are wrist, radius and ulna are forearm, making 'humerus' correct.
Question 5 of 5
The most anterior portion of the coxal bone is the:
Correct Answer: D
Rationale: The pubis, the anterior lower part of the coxal bone, forms the pubic symphysis. The ilium is superior, ischium posterior, and acetabulum lateral, making 'Pubis' correct.