J Physiol Society Meetings
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Physiol Vol 229, Issue 2 pp 339-348
Copyright © 1973 by The Physiological Society
This Article
Right arrow Full Text (PDF)
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Mawhinney, H. J. D.
Right arrow Articles by Roddie, I. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Mawhinney, H. J. D.
Right arrow Articles by Roddie, I. C.

Spontaneous activity in isolated bovine mesenteric lymphatics

 H. J. D. Mawhinney and I. C. Roddie

1. Longitudinal tension was measured in isolated segments (approximately 20 mm in length and 2 mm in diameter) of bovine mesenteric lymphatic vessels.

2. Seventeen out of thirty-nine vessels showed regular spontaneous rhythmic contractions, the most common frequency being about 2/min.

3. The strength of each contraction was related to the duration of the preceding pause, a longer pause being associated with a stronger contraction.

4. Noradrenaline increased the frequency and decreased the amplitude of the contractions. This effect was abolished by {alpha}-receptor blockade with phentolamine.

5. Isoprenaline slowed the frequency of the contractions. This effect was abolished by beta-receptor blockade with propranolol.

6. Acetylcholine had little effect on the rate of spontaneous contractions.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1973 The Physiological Society.