ATI RN
Multiple Choice Questions Skeletal System Questions
Question 1 of 5
What mineral is stored in bone?
Correct Answer: B
Rationale: Bones store calcium, a key mineral for strength and physiological functions (e.g., muscle contraction). Vitamin C is not stored, oxygen is in lungs, and potassium is cellular, making 'calcium' correct.
Question 2 of 5
The ribs attach to the lumbar vertebra in the back.
Correct Answer: B
Rationale: Ribs attach to the 12 thoracic vertebrae, not lumbar, forming the thoracic cage. Lumbar vertebrae are below, making 'False' correct.
Question 3 of 5
The largest coxal bone is the ischium.
Correct Answer: B
Rationale: The ilium is the largest coxal bone region, forming the upper pelvis. The ischium is smaller, supporting sitting, making 'False' correct.
Question 4 of 5
A joint cavity filled with fluid gives synovial joints their freedom of movement.
Correct Answer: A
Rationale: Synovial joints (e.g., knee) have a cavity with synovial fluid, reducing friction and enabling free movement. This is accurate, making 'True' correct.
Question 5 of 5
Which one of the following statements is accurate for the Appendicular Skeleton?
Correct Answer: D
Rationale: The appendicular skeleton has 126 bones (upper/lower limbs, pectoral/pelvic girdles) at the body’s extremities. The axial skeleton has 80 bones centrally. '100' and '80 at extremities' are incorrect, making 'Consists of 126 bones which are located at the extremities of the body' accurate.