Supraorbital and Supratrochlear arteries are branches of which of the following –
**Core Concept**
The supraorbital and supratrochlear arteries are branches of the ophthalmic artery, which itself is a branch of the internal carotid artery. These arteries supply the structures of the orbit and the forehead.
**Why the Correct Answer is Right**
The ophthalmic artery arises from the internal carotid artery and gives off several branches, including the supraorbital and supratrochlear arteries. These branches supply the anterior segment of the eye and the surrounding structures. The supraorbital artery runs above the eyebrow and supplies the forehead, while the supratrochlear artery runs above the medial part of the eyebrow and supplies the medial part of the forehead.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely a distractor, as the ophthalmic artery is a specific branch of the internal carotid artery, and the other options do not describe a direct relationship with the supraorbital and supratrochlear arteries.
**Option B:** This option may describe a relationship with the external carotid artery, but the ophthalmic artery is a branch of the internal carotid artery.
**Option C:** This option may describe a relationship with the facial artery, but the supraorbital and supratrochlear arteries are branches of the ophthalmic artery.
**Clinical Pearl / High-Yield Fact**
The ophthalmic artery is a branch of the internal carotid artery that supplies the structures of the orbit and the anterior segment of the eye. It is an important artery to know in ophthalmology and neurosurgery.
**Correct Answer: D. Ophthalmic artery**