Final answer:
The ophthalmic division of the trigeminal nerve divides into three main branches upon entering the orbit and it is responsible for the cutaneous sensation of the face and controls the muscles of mastication.
Step-by-step explanation:
Once the ophthalmic division of the trigeminal nerve enters the orbit, it divides into three main branches. These branches are essential for providing cutaneous sensation to certain parts of the face.
The trigeminal nerve, which is the fifth cranial nerve, is responsible for the sensory innervation of the face and the motor control of the muscles involved in mastication.
Nearby anatomical structures relevant to the question include the third ventricle situated in the diencephalon region of the brain, and the trochlear nerve which is the fourth cranial nerve that controls eye muscle movements.
Additionally, the optic nerve from the retina enters the cranium through the optic canal and the superior orbital fissure allows passage for various nerves, including the ophthalmic division of the trigeminal nerve, and the artery that supplies the eyeball.
Your correct question is: once opthalmic division of trigeminal gets into the orbit, it splits into 3?