Densely packed portion of macula lutea where visual activity is greatest is

Answer

To answer the question about the densely packed portion of the macula lutea where visual activity is greatest, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structure**: The question refers to the macula lutea, which is a specific area in the retina of the eye.

2. **Understand the Macula Lutea**: The macula lutea is known for its high concentration of photoreceptor cells, particularly cone cells, which are responsible for color vision and high acuity vision.

3. **Locate the Fovea Centralis**: Within the macula lutea, there is a central region known as the fovea centralis. This area is characterized by an even higher density of cone cells compared to the surrounding macula.

4. **Visual Activity**: The fovea centralis is where visual activity is greatest because it allows for the sharpest and clearest vision. This is due to the direct projection of light onto the cone cells in this area, resulting in high-resolution images.

5. **Conclusion**: Therefore, the densely packed portion of the macula lutea where visual activity is greatest is called the **fovea centralis**.

### Final Answer:
The densely packed portion of the macula lutea where visual activity is greatest is the **fovea centralis**.

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