Pressure tissue vibrations and tension are perceived through

Options

A. Hair and organs
B. Free nerve endings
C. Ruffini's corpuscles
D. Pacinnian corpuscles.

Answer

To solve the question "Pressure tissue vibrations and tension are perceived through," we will analyze the options provided and identify the correct sensory receptor responsible for these perceptions.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which sensory receptor is responsible for perceiving pressure, tissue vibrations, and tension.

2. **Analyze the Options**:
- **Option 1: Hairs** - While hair follicles can detect light touch, they are not primarily responsible for perceiving pressure or vibrations.
- **Option 2: Free nerve endings** - These are primarily responsible for detecting pain and temperature, not specifically for pressure or vibrations.
- **Option 3: Ruffini corpuscles** - These receptors are involved in detecting skin stretch and sustained pressure, but they are not the primary receptors for vibration.
- **Option 4: Pacinian corpuscles** - These are specialized mechanoreceptors that are sensitive to pressure and vibration. They are onion-shaped and located in the dermis, making them the most suitable option for the question.

3. **Identify the Correct Answer**: Based on the analysis, the correct answer is **Pacinian corpuscles** (Option 4). These receptors are sensitive to deep pressure and high-frequency vibrations, making them essential for perceiving tension and vibrations in tissues.

4. **Conclusion**: The correct answer to the question is **Pacinian corpuscles**.