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The A leaves the eye and the retinal blo...

The A leaves the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eyeball. B is not present in that region and hence it is called the C . At the posterior pole of the eye lateral to the C there is a yellowish pigmented spot called D with a central pit called the E

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To solve the question step by step, we will identify each component mentioned in the question and relate them to the anatomy of the eye. ### Step-by-Step Solution: 1. **Identify A**: The first part of the question states that "A leaves the eye and the retinal blood vessels enter it at a point medial to and slightly above the posterior pole of the eyeball." - **Answer**: A refers to the **optic nerve**. The optic nerve is formed by the axons of the ganglion cells in the retina and exits the eyeball at the optic disc, which is located slightly medial and above the posterior pole. 2. **Identify B**: The next part mentions "B is not present in that region and hence it is called the C." - **Answer**: B refers to **photoreceptor cells** (rods and cones). The optic disc (where the optic nerve exits) does not contain any photoreceptor cells, which is why this area is referred to as the **blind spot** (C). 3. **Identify D**: The question then states that "At the posterior pole of the eye lateral to the C there is a yellowish pigmented spot called D." - **Answer**: D refers to the **macula lutea**. This is a yellowish spot located laterally to the blind spot (optic disc) and is responsible for high acuity vision. 4. **Identify E**: Finally, it mentions "with a central pit called the E." - **Answer**: E refers to the **fovea centralis**. The fovea is a small depression in the macula lutea that contains a high concentration of cone cells, providing the sharpest vision. ### Summary of Answers: - A: **Optic nerve** - B: **Photoreceptor cells** - C: **Blind spot** - D: **Macula lutea** - E: **Fovea centralis** ### Final Answer: The complete answer to the question is: - A = Optic nerve - B = Photoreceptor cells - C = Blind spot - D = Macula lutea - E = Fovea centralis
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