Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Vesicle Formation in the Distal Part of a Neurosecretory System

Francis Knowles
Proceedings of the Royal Society of London. Series B, Biological Sciences
Vol. 160, No. 980 (Sep. 29, 1964), pp. 360-372
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/75264
Page Count: 20
  • Read Online (Free)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Vesicle Formation in the Distal Part of a Neurosecretory System
Preview not available

Abstract

Organelles of multilamellate form, consisting of concentric layers of interconnected tubules, are present in the preterminal portions of neurosecretory fibres in the pericardial organs of Squilla mantis. Secretory material accumulates as spherical droplets within these organelles. A continuous series of forms intermediate between bodies resembling mitochondria and multilamellate organelles are demonstrated by electron micrographs. Both the mitochondria and the multilamellate organelles are continuous with an intricate system of microtubules in the preterminal portions of the neurosecretory fibres. These findings may be regarded as compatible with the hypothesis that secretory material assembles within mitochondria, or their derivatives, in the preterminal portions of neurosecretory fibres, and that the distal part of a neurosecretory system plays an active part in hormone transformation or assemblage.

Page Thumbnails

  • Thumbnail: Page 
360
    360
  • Thumbnail: Page 
361
    361
  • Thumbnail: Page 
362
    362
  • Thumbnail: Page 
363
    363
  • Thumbnail: Page 
364
    364
  • Thumbnail: Page 
365
    365
  • Thumbnail: Page 
366
    366
  • Thumbnail: Page 
367
    367
  • Thumbnail: Page 
368
    368
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
369
    369
  • Thumbnail: Page 
370
    370
  • Thumbnail: Page 
371
    371
  • Thumbnail: Page 
372
    372