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← Human Body & HealthWhich consequence results when prolonged immobilization affects limb biomechanics?
A)Reduced bone mineral density occurs✓
B)Hyaline cartilage turns fibrocartilage easily
C)Increased muscle fiber diameter results always
D)Sodium-potassium pump energy expenditure increases disproportionately
💡 Explanation
Lowered mechanical stimuli cause increased osteoclast activity during bone remodeling; thereby, bone mineral density decreases. This is Wolff's Law. Cancellous bone is more susceptible rather than cortical bone, because it undergoes more remodeling under normal ambulatory conditions; therefore, lack of loading promotes bone resorption.
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