The brain nerves connected to the medulla oblongata usually include the glossopharyngeal nerve, vagus nerve, parasympathetic nerve and hypoglossal nerve. There are twelve pairs of cerebral nerves in the human body, and different cerebral nerves play different functions. The last four pairs of cerebral nerves are the glossopharyngeal, vagus, parasympathetic, and hypoglossal nerves, which are all connected to the medulla oblongata, while the other eight pairs of cerebral nerves are the olfactory, optic, oculomotor, and sciatic nerves, as well as the trigeminal, abducens, facial, and cochlear vestibular nerves. In addition, the motor and scooter nerves are usually connected to the midbrain, while the trigeminal, abducens, facial and vestibulocochlear nerves are usually connected to the pons.