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Question #47475
The Question
A mammal exposed to acute cold stress exhibits shivering thermogenesis, a response that is significantly downregulated when the animal enters hibernation. Regarding the neural and metabolic control of this process, which of the following statements is correct?
Options
- A.
The hypothalamus acts as the thermoregulatory command center, while the cerebellum coordinates the rhythmic somatic motor execution of shivering; during hibernation, a lowered hypothalamic set-point reduces cerebellar firing rates.
- B.
The cerebellum detects the drop in core body temperature and initiates shivering, while the hypothalamus coordinates the skeletal muscle contractions until hibernation induces complete neural shutdown.
- C.
Shivering is an autonomic response executed solely by the medulla oblongata, bypassing the cerebellum, while the hypothalamus regulates the metabolic downregulation during hibernation.
- D.
The hypothalamus directly innervates skeletal muscles to cause shivering, whereas the cerebellum resets the thermal tolerance range during hibernation to conserve ATP.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Cerebellum|Thermoregulation|Hypothalamus|Homeostasis
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Functional Overlap and Systems Integration.
Students often memorize 'Hypothalamus = Temperature' and incorrectly assume it executes the entire physical response directly.
The trap lies in failing to integrate the fact that shivering utilizes skeletal muscles, which inherently requires the cerebellum for motor coordination.
Additionally, it tests the misconception that hibernation is a 'complete neural shutdown' rather than a precise resetting of the hypothalamic set-point.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Neural Control and Coordination - Class 11 |
| Concept | Cerebellar Coordination Dynamics |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |