ATI RN
Skeletal System Questions Questions
Question 1 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.
Question 2 of 5
Doing arm circles is an example of
Correct Answer: B
Rationale: Arm circles involve circumduction, a circular motion combining flexion, extension, abduction, and adduction (e.g., shoulder). Rotation is single-axis, flexion bends, and pronation rotates the palm, making 'circumduction' correct.
Question 3 of 5
In an adult, the medullary cavity contains yellow marrow or fat.
Correct Answer: A
Rationale: In adults, the medullary cavity of long bones contains yellow marrow (fat), replacing red marrow with age. This is a normal shift, making 'True' correct.
Question 4 of 5
The cribriform plate of the sphenoid bone allows access to the olfactory sensors in the upper nasal cavity.
Correct Answer: B
Rationale: The cribriform plate of the ethmoid bone (not sphenoid) has foramina for olfactory nerves from the nasal cavity to the brain. This error makes 'False' correct.
Question 5 of 5
The pectoral girdle is made up of the clavicle and sternum.
Correct Answer: B
Rationale: The pectoral girdle comprises the clavicle and scapula, supporting the arms. The sternum is axial, not part of the girdle, making 'False' correct.