人下甲介粘膜の神経分布について

抄録

Generally the mucous membrane of inferior nasal concha consists of abundant vegetative nerve fibres and some sensory nerve fibres, and both participate in the plexus formation of deep and superficial lamina propria. In addition to this, intervenous nerve plexus in cavernous plexus and periarterial plexus around arteries were often observed.
Vegetative nerve fibres form their fine terminal reticula around arteries, cavernous plexus and nasal glands; that is, vegetative nerve fibres, turn to preterminal fibres which are vacuolar, reticular or fascicular in shape when stained, and reach the wall of ducts and glands. Then the fibres, divided into finer neurofitrils, penetrate in to adventitia, some of them into intermediate coat of arteries, and form fine terminal reticulum chiefly around smooth muscles. The preterminal fibres which reached a glandular wall, wrap it like a basket and form terminal reticulum around the glandular acini. No vegetative nerve fibres which enter epithelium are found at all.
Sensory nerve fibres are few, and most of them generally lose their myelin sheath earlier than those in other mucosa. The type of nerve endings is mostly simple branched ending; compound branhed or unbranched endings are few, and corpuscular endings can not be found. Different from other mucous membrane, nerve endings are often found in the connective tissue of lamina propria.
Fibres in epithelium are rarely found. They are much finer and tneir endings are sharp. On the base of these findings I made a comparative study of reports of the investigators from the histological view, and examined the function of inferior concha mucosa from the neurohistological standpoint. Moreover, a suggestion was made that vegetative nerve fibres, with arteries, plays an important role in the developnent of chronic sinusitis.