ATI RN
Questions for Skeletal System Questions
Question 1 of 5
Which of the following statement is INCORRECT?
Correct Answer: C
Rationale: Bone is living tissue with cells, blood vessels, and marrow—most blood cells are made in marrow (A), it stores minerals like calcium (B), and it protects/supports organs (D). 'Bone is a dry and non-living supporting structure' is incorrect due to its living nature.
Question 2 of 5
Which hormone-bone cell combination may result in osteoporosis?
Correct Answer: A
Rationale: Osteoporosis involves excessive bone resorption. Cortisol (from the adrenal glands) stimulates osteoclast activity, which breaks down bone tissue, potentially leading to porosity if unbalanced. Estrogen supports osteoblasts (bone formation), thyroid hormone can increase both formation and resorption but isn’t primarily linked to osteoporosis, and thyrocalcitonin (calcitonin) inhibits osteoclasts, reducing bone loss.
Question 3 of 5
Which of the following bones is not part of the axial skeleton?
Correct Answer: D
Rationale: The axial skeleton includes the skull (sphenoid), vertebral column (sacrum), and hyoid bone. The clavicle (collarbone) is part of the appendicular skeleton, specifically the pectoral girdle, not the axial skeleton.
Question 4 of 5
The mastoid process is a structural prominence of the
Correct Answer: D
Rationale: The mastoid process, a bony projection behind the ear, is part of the temporal bone. The sphenoid, parietal, and occipital bones lack this feature.
Question 5 of 5
The false pelvis is
Correct Answer: C
Rationale: The false pelvis (greater pelvis) lies above the pelvic brim and is wider in females for childbirth, thus narrower in males. It’s part of the skeletal system, not inferior to the true pelvis or male-only.