Which two nerves arise from the Frontal Nerve (V1)?

Which two nerves arise from the Frontal Nerve (V1)?

• A. Supratrochlear and Supraorbital
• B. Nasociliary and Frontal
• C. Lacrimal and Zygomatic
• D. Infratrochlear and Anterior Ethmoidal

Answer: (A)

The Frontal nerve, a sensory branch of the ophthalmic division (V1), divides in the orbit into two terminal branches: the supratrochlear nerve and the supraorbital nerve. These are the nerves that provide sensation to the forehead and anterior scalp. The supratrochlear nerve travels medially and ascends near the midline, while the supraorbital nerve exits the orbit through the supraorbital foramen or notch to fan out across the forehead toward the vertex. Other nerve pairs listed come from different branches: some arise from the nasociliary nerve (like infratrochlear and anterior ethmoidal), while others belong to V2 or are not direct branches of the Frontal nerve.

The Frontal nerve, a sensory branch of the ophthalmic division (V1), divides in the orbit into two terminal branches: the supratrochlear nerve and the supraorbital nerve. These are the nerves that provide sensation to the forehead and anterior scalp. The supratrochlear nerve travels medially and ascends near the midline, while the supraorbital nerve exits the orbit through the supraorbital foramen or notch to fan out across the forehead toward the vertex. Other nerve pairs listed come from different branches: some arise from the nasociliary nerve (like infratrochlear and anterior ethmoidal), while others belong to V2 or are not direct branches of the Frontal nerve.