Which of the following is rapidly adapting receptors
**Core Concept**
The question tests the understanding of sensory receptor adaptation, specifically the difference between rapidly and slowly adapting receptors. **Rapidly adapting receptors** are specialized to detect changes in stimuli, whereas slowly adapting receptors respond to sustained stimuli.
**Why the Correct Answer is Right**
Rapidly adapting receptors, such as **Meissner's corpuscles** and **Pacinian corpuscles**, quickly adjust to a constant stimulus by decreasing their firing rate. This allows them to detect rapid changes in the environment, like vibration or texture.
**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because it is not specified.
**Option B:** Incorrect because it is not provided.
**Option C:** Incorrect as the option is missing.
**Option D:** Similarly, this option is also not given.
**Clinical Pearl / High-Yield Fact**
Remember, **Meissner's corpuscles** are an example of rapidly adapting receptors, crucial for detecting light touch and changes in texture.
**Correct Answer:** D. Pacinian corpuscles