ATI RN
Skeletal System Questions Questions
Question 1 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 2 of 5
The joint between the carpal and first metacarpal of the thumb is a joint.
Correct Answer: C
Rationale: The thumb’s carpometacarpal joint is a saddle joint, allowing opposition (e.g., grasping). Hinge is one-plane, condyloid is two-plane, and gliding is sliding, making 'saddle' correct.
Question 3 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 4 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 5 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.