ATI RN
Questions About Skeletal System with Answers Questions
Question 1 of 5
Bone-forming cells are called:
Correct Answer: B
Rationale: Osteoblasts are cells that synthesize bone matrix, forming new bone tissue. Osteoprogenitor cells are precursors, osteocytes maintain bone, and osteoclasts resorb it, making 'osteoblasts' the correct answer.
Question 2 of 5
The cranial bone(s) that forms the forehead, a portion of the nose and the superior portion of the orbits is/are the bone(s).
Correct Answer: B
Rationale: The frontal bone forms the forehead, part of the nasal cavity roof, and the superior orbit rims. The ethmoid is internal, parietal forms the sides, and sphenoid is deeper, making 'frontal' the correct answer.
Question 3 of 5
The lower jaw is formed by the:
Correct Answer: A
Rationale: The mandible, the only movable skull bone, forms the lower jaw and holds lower teeth. The maxillae are upper jaw, vomer is nasal, and zygomatic is cheek, making 'mandible' correct.
Question 4 of 5
The atlas is also known as the vertebrae.
Correct Answer: A
Rationale: The atlas, the first cervical vertebra (C1), supports the skull and allows nodding. C2 is the axis, C7 is lower cervical, and T1 is thoracic, making 'C1' correct.
Question 5 of 5
Identify the bones that form the pectoral girdle.
Correct Answer: A
Rationale: The pectoral girdle, supporting the upper limbs, comprises the scapulae (shoulder blades) and clavicles (collarbones). Radii/ulnae are forearm, coxal bones are pelvic, and tibiae/fibulae are leg, making 'Scapulae and clavicles' correct.