Nerves

There are twelve pairs of cranial nerves. Cranial nerves eight and twelve are only carry afferent impulses.Olfactory nerves relay information from high in the nasal cavity. When the brain is removed the olfactory lobe on the brain gets ripped off. The olfactory foramina is where the nerves go through cranial nerve I. The ganglion is a collection of cell bodies outside the central nervous system. A cell body found inside the central nervous system is a nucleus cell. Cervical three, four, and five stimulates the breathing, they go through thoracic diagram to keep your negative and positive pressure.The median nerve controls your thumb and if it is severed you will never be able to use it again.The sciatic nerve is the largest nerve in the body it controls the back muscles of the legs.
The muscles of the eyeball stimulate the oculomotor nerves, trochlear nerves, and abducens. The trochlear nerve is the central nerve number four. The central nerve VI is the abducens it is a motor nerve, sends efferent impulses. The trochlear nerve controls the superior oblique. The ascending oblique attaches and connects to the lateral rectus. Nerve three, four, and six all pass through the superior orbital fissure. There are two parts to the autonomic nervous system, the sympathetic and the parasympathetic. The parasympathetic nerves system stimulates the muscles of the eyeball that cause the eyeball to constrict. The sympathetic nerves system stimalates the muscles of the eye to dilate.