[Modulating effects of nucleus termination nervi trigemini on the activities of genioglossus in rabbits].
The effects of electrical stimulation to the nucleus termination nervi trigemini (NTV) on the activities of genioglossus were studied in 35 rabbits anesthetized with urethane. Electrical stimulation of NTV could cause facilitatory response of genioglossal muscle markedly. Monosodium glutamate microinjected into NTV also produced significant increase of genioglossal activities. The latency of genioglossal response to electrical stimulation of dorsal or ventral part of NTV were respectively 5.9 +/- 0.7 ms and 3.0 +/- 0.4 ms. When the nucleus hypoglossus was stimulated, the latency was 2.2 +/- 0.2 ms. These results suggested that the excitation of NTV could enhance the genioglossal activities so that the resistance of upper airway might be decreased.
Dong
H H
HH
Department of Physiology, Shandong Medical University, Jinan.
Liu
L
L
Zhang
H
H
D000818:Animals; D003964:Diaphragm / Q000502:physiology; D004558:Electric Stimulation; D005260:Female; D008297:Male; D011817:Rabbits; D012132:Respiratory Muscles / Q000502:physiology*; D012970:Sodium Glutamate / Q000494:pharmacology; D013268:Stimulation, Chemical; D014278:Trigeminal Nuclei / Q000502:physiology*
D012970:Sodium Glutamate