## **Core Concept**
The angular vein is a significant anatomical structure in the facial venous system. It is located near the medial canthus of the eye and plays a crucial role in the venous drainage of the face. Understanding its formation is essential for clinical correlations, especially regarding the spread of infections.

## **Why the Correct Answer is Right**
The angular vein is formed by the union of the **supratrochlear vein** and the **supraorbital vein**. These veins are tributaries that drain the forehead and scalp. The supratrochlear vein and supraorbital vein merge to form the angular vein, which then continues as the facial vein. This venous connection is clinically significant because it provides a pathway for the spread of infection from the face to the cavernous sinus.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately represent the tributaries that form the angular vein.
- **Option B:** This option is incorrect as it inaccurately describes the formation of the angular vein.
- **Option C:** Although not directly provided, any option suggesting a different formation of the angular vein would be incorrect based on anatomical facts.
- **Option D:** Similarly, any other option not specifying the supratrochlear and supraorbital veins as the forming tributaries would be incorrect.

## **Clinical Pearl / High-Yield Fact**
A crucial clinical correlation to remember is the potential for spread of infection from the face, particularly the medial canthus area, to the cavernous sinus via the angular vein. This can lead to **cavernous sinus thrombosis**, a serious and potentially life-threatening condition. The connection between the facial veins and the cavernous sinus is primarily through the angular vein.

## **Correct Answer:** C. Supratrochlear and supraorbital veins.