The minor palatine nerves consist of processes of the sympathetic and parasympathetic ganglia, branches of the aortic arch. The nerves innervate the palatine tonsil, nasal cavity, soft tissue capsule of the pterygopalatine fossa, glands, etc. The origins of the palatine small nerves are the ventricular plexus. The nerve trunk is located in the parapharyngeal tissue on the lateral wall of the pharynx and is divided into a number of branches that branch along the mucous membrane of the nasal cavity and pharynx.
Each optic nerve gives off more processes: nine nerve fibers extend to the optic nerve, forming the second part of the optic nerve in the form of a loop. In this case, the last part of this nerve (third part) extends directly from the bridge. The optic nerve receives impulses from the back part of the retina (from the scotopic receptor) and transmits them to the brain partly at the same time as the transmission of impulses from the first part of the optic nerve (tectal part), which sends impulses from the front part of the retina in response to exposure to light .
Damage to the nerve leads to loss of vision, as it suffers from any pathology affecting the tissues that make up the first and second parts. In addition, the optic nerve provides the perception of taste and smell by the oral mucosa. The sensitive part of the auditory analyzer (the superior branch of the auditory nerve) takes information from the anterior parts of the eardrum, the auricle and the external auditory canals for processing in the special auditory zone of the cerebral cortex. The auditory receptors located in the bony labyrinth process the posterior parts of the eardrum. The size of a person and the degree of his perception of smell and taste change under the influence of his age and taste preferences. As a result of eating habits, the taste of food may change. These changes can persist for several hours after finishing eating and depend on the hormonal characteristics of the body.