A fracture in the shaft of a bone would be a break in the:
Metaphysis
Epiphysis
Diaphysis
Periosteum
Endosteum
The Correct Answer is C
Choice A reason: The metaphysis is the region between the diaphysis and epiphysis, often containing the growth plate in children. It is not the shaft of the bone.
Choice B reason: The epiphysis refers to the ends of long bones, which articulate with adjacent bones. A fracture here would not be considered a shaft fracture.
Choice C reason: The diaphysis is the correct answer. It is the central shaft of a long bone, composed primarily of compact bone and housing the medullary cavity. Fractures in this region are common in long bones like the femur and humerus.
Choice D reason: The periosteum is a fibrous membrane covering the outer surface of bones. While it may be affected in a fracture, it is not the structural region referred to as the shaft.
Choice E reason: The endosteum lines the inner surface of the bone, including the medullary cavity. It plays a role in bone remodeling but is not the shaft itself
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Granulation tissue forms early in the healing process, not after the bony callus. It precedes the formation of fibrocartilaginous and bony calluses.
Choice B reason: Remodeling of the bony callus is the correct answer. After the bony callus forms, it is gradually reshaped by osteoclasts and osteoblasts to restore the bone’s original structure and strength.
Choice C reason: The fibrocartilaginous callus forms before the bony callus, serving as a temporary bridge between broken bone ends.
Choice D reason: Hematoma formation is the initial step in fracture healing, occurring immediately after injury.
Choice E reason:
Correct Answer is A
Explanation
Choice A reason: Communication is not a direct function of the skeletal system. While the skeletal system supports structures involved in communication (e.g., the skull housing the brain), it does not itself facilitate communication.
Choice B reason: Support is a primary function of the skeletal system. It provides a rigid framework that supports the body and maintains its shape.
Choice C reason: The skeletal system stores essential minerals such as calcium and phosphate, which can be released into the bloodstream as needed.
Choice D reason: Hematopoiesis, or the production of blood cells, occurs in the red bone marrow found within certain bones. This is a vital function of the skeletal system.
Choice E reason: Bones serve as anchoring points for muscles, allowing movement through the leverage of joints and tendons.
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