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Question #46857
The Question
Areolar connective tissue serves as a support framework for epithelium and houses cells like macrophages and mast cells. In a patient with chronic, recurrent mucosal infections, the sub-epithelial areolar tissue undergoes pathological hardening (fibrosis). Which of the following best explains the underlying mechanism linking the immune response to this structural alteration?
Options
- A.
Persistent anamnestic (secondary) immune responses in MALT disrupt normal fibroblast-mediated matrix turnover, leading to excessive collagen deposition.
- B.
The areolar tissue undergoes metaplasia into dense regular connective tissue to mechanically block pathogen entry during the primary immune response.
- C.
Continuous histamine release by local mast cells directly polymerizes the ground substance, converting loose connective tissue into specialized adipose tissue.
- D.
Exhaustion of memory B-cells causes local fibroblasts to act as phagocytes, halting the secretion of structural fibers and hardening the matrix.
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Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Adipose vs Areolar Function|MALT Structure|Primary vs Secondary Immune Response
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Integrating 'Structural Organisation in Animals' (Class 11) with 'Human Health and Disease' (Class 12).
Students often memorize areolar tissue components and MALT separately.
The trap lies in understanding how chronic anamnestic responses (secondary immunity) disrupt the homeostatic function of fibroblasts.
A common misconception is that tissue hardening is either a conversion to dense regular connective tissue (functional confusion) or a direct result of mast cell histamine (mechanism confusion), rather than pathological collagen deposition (fibrosis) driven by chronic inflammation.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Structural Organisation in Animals - Class 11 |
| Concept | Adipose vs Areolar Function |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |