Journal of the Korean Ophthalmological Society 1975;16(2):91-98.
Published online February 1, 1975.
The Cholinergic and Adrenergic Nerve Innervation and Nerve Endings of the Iris Muscle in Monkeys.
Song Hee Lee, Byung Guk Pak
Department of Ophthalmology, College of Medicine, Busan National University, Busan, Korea.
홍채근의 신경지배와 신경종말의 형태에 대하여
이송희 , 박병국 ( Song Hee Lee , Byung Gook Park )
Abstract
The cholinergic and adrenergic nerve innervation and nerve endings of the iris muscle in Cynomolgus monkey eye is studied by electron microscopy. In the iris, the sphincter muscle reveals nerve terminals containing small empty vesicle which is said to be cholinergic in a greater number (about 85% of nerve terminals) and those containing small cored vericles which is said to be adrenergic in a fewer number (about 15% of nerve terminals) and the latter are more frequently found in the region of peripheral one third of the sphincter muscle then the rest two thirds. In the dilator muscle 65% of the nerve terminals is found to be adrenergic and 35% cholinergic. A dual innervation, adrenergic and cholinergic nerves in both the iris dilator and the sphincter muscle, is not clearly explained in their functions, that is, how influence two nerves one another in addition to the effector cells. A single or double layer of basement membrane lies between the nerve terminals and adjacent muscle in the stromal site of iris muscle. In part the close apposition of the nerve with muscle membrane is seperated by an intercellular space of about 200 A, which is much more in the muscle bundles than in the peripheral portion of the sphincter muscle, however a few in the dilator muscle. The two or three adrenergic and cholinergic axons or terminals in the iris muscle are often closely adjacent to one another, which nerve terminals are not clarified, whether two nerves is motor, or afferent and efferent nerve unit.
TOOLS
METRICS Graph View
  • 394 View
  • 0 Download
Related articles


ABOUT
BROWSE ARTICLES
EDITORIAL POLICY
FOR CONTRIBUTORS
Editorial Office
SKY 1004 Building #701
50-1 Jungnim-ro, Jung-gu, Seoul 04508, Korea
Tel: +82-2-583-6520    Fax: +82-2-583-6521    E-mail: kos08@ophthalmology.org                

Copyright © 2024 by Korean Ophthalmological Society.

Developed in M2PI

Close layer
prev next