ATI RN
Multiple Choice Questions on Skeletal System Questions
Question 1 of 5
Yellow bone marrow consists mostly of:
Correct Answer: B
Rationale: Yellow bone marrow, found in the medullary cavity of adult long bones, is primarily fat tissue (adipose), serving as an energy reserve. Cartilage is at joints, and red/white blood cells are in red marrow, making 'fat tissue' correct.
Question 2 of 5
The membranous regions in between the cranial bones of a fetal skull are called:
Correct Answer: A
Rationale: Fontanels are soft, membranous gaps between fetal cranial bones, allowing skull flexibility during birth and growth (e.g., anterior fontanel). Foramina are holes, sinuses are cavities, and sutures are adult joints, making 'fontanels' correct.
Question 3 of 5
The cheek bones are predominately formed by the bones.
Correct Answer: D
Rationale: The zygomatic bones form the cheeks and lateral orbit rims, contributing to facial structure. The maxillae form the upper jaw, parietal the skull top, and temporal the sides, making 'zygomatic' correct.
Question 4 of 5
Within the vertebral column there are cervical vertebrae, thoracic vertebrae and lumbar vertebrae.
Correct Answer: C
Rationale: The vertebral column has 7 cervical, 12 thoracic, and 5 lumbar vertebrae in adults, totaling 24 movable vertebrae (plus sacrum and coccyx). '7: 12: 5' matches this standard count.
Question 5 of 5
The breastbone is also known as the:
Correct Answer: D
Rationale: The sternum, or breastbone, is the flat bone in the chest’s center, connecting ribs. The clavicle is the collarbone, manubrium is a sternum part, and scapula is the shoulder blade, making 'sternum' correct.