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CROSS STRIATIONS OF THE MUSCLE FIBERS OF THE SINO-AURICULAR NODE

CROSS STRIATIONS OF THE MUSCLE FIBERS OF THE SINO-AURICULAR NODE A fairly careful search of the literature failed to reveal photomicrographic reproduction of the cross striations of the muscle fibers of the sino-auricular node. These striations have been well described and drawings have been made. In the average section they are often invisible; in some, however, they are visible with the ordinary high power objective. The fibers bear a striking resemblance to the cardiac muscle fibers but are much smaller. They do not have any characteristics of nerve tissue. I1 have described a simple routine method of examining the sino-auricular node as well as the conduction system of the heart. The accompanying illustration shows the cross striations distinctly in the muscle fibers of the sino-auricular node of a human heart, with a magnification of 1,200. The nucleus of the fiber running obliquely across the figure is in the lower left hand corner. The black tissue is a mass of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA American Medical Association

CROSS STRIATIONS OF THE MUSCLE FIBERS OF THE SINO-AURICULAR NODE

JAMA , Volume 94 (16) – Apr 19, 1930

CROSS STRIATIONS OF THE MUSCLE FIBERS OF THE SINO-AURICULAR NODE

Abstract


A fairly careful search of the literature failed to reveal photomicrographic reproduction of the cross striations of the muscle fibers of the sino-auricular node. These striations have been well described and drawings have been made. In the average section they are often invisible; in some, however, they are visible with the ordinary high power objective. The fibers bear a striking resemblance to the cardiac muscle fibers but are much smaller. They do not have any characteristics of nerve...
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References (1)

Publisher
American Medical Association
Copyright
Copyright © 1930 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
0098-7484
eISSN
1538-3598
DOI
10.1001/jama.1930.27120420003015b
Publisher site
See Article on Publisher Site

Abstract

A fairly careful search of the literature failed to reveal photomicrographic reproduction of the cross striations of the muscle fibers of the sino-auricular node. These striations have been well described and drawings have been made. In the average section they are often invisible; in some, however, they are visible with the ordinary high power objective. The fibers bear a striking resemblance to the cardiac muscle fibers but are much smaller. They do not have any characteristics of nerve tissue. I1 have described a simple routine method of examining the sino-auricular node as well as the conduction system of the heart. The accompanying illustration shows the cross striations distinctly in the muscle fibers of the sino-auricular node of a human heart, with a magnification of 1,200. The nucleus of the fiber running obliquely across the figure is in the lower left hand corner. The black tissue is a mass of

Journal

JAMAAmerican Medical Association

Published: Apr 19, 1930

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