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Question #46852
The Question
A genetic mutation in the fibrillin-1 gene prevents the proper formation of microfibril scaffolds, leading to disorganized tropoelastin deposition. Which of the following anatomical structures and its specific histological layer would be most directly susceptible to fatal mechanical failure (such as dissection) due to this specific loss of elasticity and recoil?
Options
- A.
Aorta; Tunica media
- B.
Aorta; Tunica externa
- C.
Tendons; Dense regular connective tissue
- D.
Trachea; Hyaline cartilage
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Evolutionary_Exception
Tackle problems where standard rules evolve or change based on specific environmental constraints.
Concepts Behind This Question
Elastin|Fibrillin_Microfibrils|Dense_Regular_Connective_Tissue
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Differentiating the biochemical composition of connective tissues and mapping them to specific histological layers.
Students often confuse the structural roles of collagen (tensile strength in tendons/tunica externa) with elastin (recoil in tunica media), and fail to pinpoint the tunica media as the primary elastic layer of large arteries responsible for managing high-pressure mechanical stress.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Structural Organisation in Animals - Class 11 |
| Concept | Connective Tissue Fiber Composition |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |