Folan-Curran J, Hickey K, Monkhouse W S
Department of Human Anatomy and Physiology, University College Dublin, Ireland.
Somatosens Mot Res. 1994;11(1):65-8. doi: 10.3109/08990229409028858.
The innervation of the rat external auditory meatus has contributions from several nerves. Fluoro-gold, a retrograde neuronal tracer, was used to determine the relative contributions from neurons in cranial and spinal ganglia, and to distinguish any difference in the sensory and motor innervation between the outer cartilaginous and inner bony portions. The following ganglia were examined: the trigeminal, geniculate, glossopharyngeal, vagal, superior cervical, and dorsal root (C2-C4) ganglia. All selected ganglia demonstrated innervation of the external ear canal, particularly the trigeminal, glossopharyngeal, facial, and vagal ganglia. The geniculate and glossopharyngeal ganglia contributed more innervation to the inner osseous portion than to the outer cartilaginous portion of the external ear canal, and the vagal ganglion contributed relatively equally.
大鼠外耳道的神经支配来自多条神经。荧光金，一种逆行神经元示踪剂，用于确定颅神经节和脊神经节中神经元的相对贡献，并区分外耳道软骨部和骨质部在感觉和运动神经支配上的差异。研究了以下神经节：三叉神经节、膝状神经节、舌咽神经节、迷走神经节、颈上神经节和背根神经节（C2 - C4）。所有选定的神经节均显示对外耳道有神经支配，尤其是三叉神经节、舌咽神经节、面神经节和迷走神经节。膝状神经节和舌咽神经节对外耳道骨质部的神经支配比对软骨部的更多，而迷走神经节的贡献相对均等。
