## **Core Concept**
The nasolacrimal duct is a part of the tear drainage system in the eye. It plays a crucial role in draining tears from the eye into the nasal cavity. Understanding its direction is essential for ophthalmological and otolaryngological procedures.

## **Why the Correct Answer is Right**
The nasolacrimal duct directs tears from the lacrimal sac into the nasal cavity. Specifically, it runs downward and laterally, then turns medially to open into the inferior meatus of the nasal cavity. This direction allows for the effective drainage of tears.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Incorrect because it does not accurately describe the direction of the nasolacrimal duct. Without a visual, it's hard to specify, but typically, incorrect options might suggest a direction that is purely vertical, horizontal, or opposite to the actual anatomical path.
* **Option B:** Incorrect as it might suggest a direction that is partially correct but not entirely accurate, such as only downward without acknowledging the lateral and medial components.
* **Option C:** This option is not provided for evaluation.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the nasolacrimal duct opens into the inferior meatus of the nasal cavity. Blockage of this duct can lead to epiphora (excessive tearing) and dacryocystitis (infection of the lacrimal sac).

## **Correct Answer:** .