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Neural Circuit of Tear Secretion Shigeru Nakamura 1 1Department of Ophthalmology, Keio University School of Medicine Keyword: 涙液分泌 , 自律神経系 , 涙腺 , 角膜知覚 , 知覚神経 , tear secretion , autonomic nervous system , lacrimal gland , corneal sensation , sensory nerve pp.1217-1223
Published Date 2021/11/1
DOI https://doi.org/10.11477/mf.1416201920
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Abstract

Tears are extracellular fluid secreted by the lacrimal apparatus. Tear secretions have three secretory modes, and each mode has different roles. Basal secretion, a continuous flow, moistens the surface of the cornea. Reflex tearing, a marked transient secretion, removes foreign bodies or irritant chemicals from the ocular surface. Emotional secretion, which occurs due to emotional arousal. Although the regulation of the lacrimal gland activity via the autonomic nervous system has been recognized as fundamental to maintaining the aqueous tear flow, the contribution of the individual neural system in tear secretion has not been elucidated.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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