The order of arrangement of eyeball layers from outside to inside is

Options

A. retina , choroid, sclerotic
B. choroid , sclerotic , retina
C. sclerotic , choroid , retina
D. retina , sclerotic , choroid

Answer

To answer the question regarding the order of arrangement of the eyeball layers from outside to inside, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Layers of the Eyeball**: The human eyeball consists of three main layers: the outer layer (sclera), the middle layer (choroid), and the inner layer (retina).

2. **Describe Each Layer**:
- **Sclera**: This is the outermost layer of the eyeball. It is made of dense connective tissue and provides structure and protection. The front part of the sclera is modified to form the cornea.
- **Choroid**: This is the middle layer, which is rich in blood vessels and provides nourishment to the eye. It appears bluish in color and is thicker at the anterior side where it forms the ciliary body.
- **Retina**: This is the innermost layer of the eyeball. It contains the photoreceptor cells (rods and cones) and is responsible for converting light into neural signals.

3. **Order of Arrangement**: Based on the descriptions:
- From outside to inside, the order is: **Sclera → Choroid → Retina**.

4. **Conclusion**: Therefore, the correct sequence of the eyeball layers from outside to inside is **Sclera, Choroid, Retina**.

### Final Answer:
The order of arrangement of eyeball layers from outside to inside is **Sclera, Choroid, Retina**.

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