ATI RN
Skeletal System Questions Questions
Question 1 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 2 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 3 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 4 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 5 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.