ATI RN
Skeletal System Questions Questions
Question 1 of 5
The cranial bone(s) shaped like a butterfly that forms the sides and floor of the cranium is/are the bone(s).
Correct Answer: C
Rationale: The sphenoid bone, butterfly-shaped, forms the cranium’s floor and sides, housing the pituitary. The ethmoid is anterior, occipital posterior, and temporal lateral, making 'sphenoid' correct.
Question 2 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 3 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 4 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.
Question 5 of 5
In one foot, there are tarsals, metatarsals and phalanges.
Correct Answer: B
Rationale: One foot has 7 tarsals (ankle), 5 metatarsals (foot), and 14 phalanges (toes: 2 in big toe, 3 each in others). '7-5-14' is the correct count.