ATI RN
Skeletal System Questions Questions
Question 1 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 2 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.
Question 3 of 5
The tibia articulates with the calcaneus of the ankle.
Correct Answer: B
Rationale: The tibia articulates with the talus (not calcaneus) at the ankle joint. The calcaneus (heel) is below, making 'False' correct.
Question 4 of 5
The bones do not assist the lymphatic system.
Correct Answer: B
Rationale: Bones assist the lymphatic system via bone marrow, producing lymphocytes (immune cells). This makes 'False' correct.
Question 5 of 5
Which one of the following bones is located in the lower arm?
Correct Answer: B
Rationale: The lower arm (forearm) includes the radius and ulna. The scapula is the shoulder blade, femur is the thigh, and humerus is the upper arm, making 'Radius' the correct answer.