Question

Progressive loss of bone that occurs in osteoporosis is an example of:

• A. \( \text{Atrophy} \)
• B. \( \text{Hyperplasia} \)
• C. \( \text{Hypertrophy} \)
• D. \( \text{Metaplasia} \)

Hint:

Osteoporosis can be prevented and managed by: 
1. Adequate calcium and vitamin D intake. 
2. Regular weight-bearing exercises. 
3. Medications like bisphosphonates to reduce bone resorption.

Answer 1

The Correct Option is A

Step 1: Understanding atrophy. Atrophy is the reduction in the size or number of cells, tissues, or organs, often resulting in diminished function. In osteoporosis, the loss of bone mass occurs due to increased bone resorption and decreased bone formation, leading to reduced bone density and strength. 

Step 2: Comparison with other options. - Option \( (B) \): Hyperplasia refers to an increase in the number of cells, which does not occur in osteoporosis. 
- Option \( (C) \): Hypertrophy refers to an increase in cell size, not cell loss. 
- Option \( (D) \): Metaplasia refers to the replacement of one cell type with another, which is unrelated to osteoporosis. 

Step 3: Explanation of osteoporosis. Osteoporosis is a systemic skeletal condition characterized by decreased bone density and microarchitectural deterioration of bone tissue, leading to fragility fractures. This condition exemplifies atrophy due to the progressive loss of bone tissue. 

Conclusion: Progressive bone loss in osteoporosis is a clear example of \( (A) \ \text{Atrophy} \).