which layer of the wall of an eyeball contains abundant blood vessels ?

Options

A. Lens
B. Retina
C. Choroid
D. Sclerotic

Answer

To answer the question "Which layer of the wall of an eyeball contains abundant blood vessels?", we can follow these steps:

### Step 1: Identify the Layers of the Eyeball
The eyeball consists of three main layers:
1. Sclera
2. Choroid
3. Retina

### Step 2: Understand the Function of Each Layer
- **Sclera**: This is the outermost layer of the eyeball. It is tough and provides structure and protection to the eye. It does not contain many blood vessels.

- **Retina**: This is the innermost layer located at the back of the eye. It is responsible for converting light into neural signals but is also not known for having abundant blood vessels.

- **Choroid**: This layer is located between the sclera and the retina. It is rich in blood vessels and supplies nutrients and oxygen to the outer layers of the retina.

### Step 3: Analyze the Options
Given the options:
1. Lens
2. Retina
3. Choroid
4. Sclera

From our understanding:
- The **lens** does not contain blood vessels.
- The **retina** has some blood supply but is not abundant.
- The **choroid** is known for its rich blood vessel supply.
- The **sclera** has few blood vessels.

### Step 4: Conclusion
Based on the analysis, the layer of the wall of the eyeball that contains abundant blood vessels is the **choroid**.

### Final Answer
The correct answer is **Choroid**.

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