Central determination of the rhythmic adductor activity in the fresh-water mussel Anodonta cygnea L., pelecypoda

J. Salánki, István Varanka

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

1. 1. The rhythmic phasic contractions of the adductors are synchronous with the burst activity of the ganglia supplying the innervation of the adductors. The burst activity precedes the contraction by about 0·5-1·5 sec. 2. 2. Isolated ganglia can also initiate burst activity, and this can be considered a spontaneous phenomenon in the ganglia. 3. 3. Stretching of the adductors for several hours and also abolishing the physiological force loading of the muscles can cause in most cases some change in the frequency of the adductor rhythm, but in each situation both an increase and a decrease occurred. 4. 4. The loading of the adductors for a short period evokes an "on" and "off" effect from the ganglia; however, long-lasting stretching does not cause any significant change in the electrical activity of the latter. 5. 5. No activity increase was recorded at loading from the nerve innervating the anterior adductor. 6. 6. The initiation of the burst activity controlling the fast, rhythmic contractions in Anodonta cygnea is not a reflex response triggered from outside, but is a special property of the central nervous system which can be influenced by afferent inputs only to a limited degree.

Original languageEnglish
JournalComparative Biochemistry and Physiology - A Molecular and Integrative Physiology
Volume41
Issue number3
Publication statusPublished - Mar 1 1972

Fingerprint

Anodonta
Bivalvia
Fresh Water
Ganglia
Stretching
Water
Neurology
Muscle
Reflex
Central Nervous System
Muscles

Keywords

  • adductor
  • Anodonta cygnea
  • ganglia
  • molluscs
  • muscle
  • nerve activity
  • reflex action
  • rhythmic activity

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Biochemistry

Cite this

@article{08e0976c68534f1da29f07db5be0d551,
title = "Central determination of the rhythmic adductor activity in the fresh-water mussel Anodonta cygnea L., pelecypoda",
abstract = "1. 1. The rhythmic phasic contractions of the adductors are synchronous with the burst activity of the ganglia supplying the innervation of the adductors. The burst activity precedes the contraction by about 0·5-1·5 sec. 2. 2. Isolated ganglia can also initiate burst activity, and this can be considered a spontaneous phenomenon in the ganglia. 3. 3. Stretching of the adductors for several hours and also abolishing the physiological force loading of the muscles can cause in most cases some change in the frequency of the adductor rhythm, but in each situation both an increase and a decrease occurred. 4. 4. The loading of the adductors for a short period evokes an {"}on{"} and {"}off{"} effect from the ganglia; however, long-lasting stretching does not cause any significant change in the electrical activity of the latter. 5. 5. No activity increase was recorded at loading from the nerve innervating the anterior adductor. 6. 6. The initiation of the burst activity controlling the fast, rhythmic contractions in Anodonta cygnea is not a reflex response triggered from outside, but is a special property of the central nervous system which can be influenced by afferent inputs only to a limited degree.",
keywords = "adductor, Anodonta cygnea, ganglia, molluscs, muscle, nerve activity, reflex action, rhythmic activity",
author = "J. Sal{\'a}nki and Istv{\'a}n Varanka",
year = "1972",
month = "3",
day = "1",
language = "English",
volume = "41",
journal = "Comparative Biochemistry and Physiology - A Physiology",
issn = "1095-6433",
publisher = "Elsevier Inc.",
number = "3",

}

TY - JOUR

T1 - Central determination of the rhythmic adductor activity in the fresh-water mussel Anodonta cygnea L., pelecypoda

AU - Salánki, J.

AU - Varanka, István

PY - 1972/3/1

Y1 - 1972/3/1

N2 - 1. 1. The rhythmic phasic contractions of the adductors are synchronous with the burst activity of the ganglia supplying the innervation of the adductors. The burst activity precedes the contraction by about 0·5-1·5 sec. 2. 2. Isolated ganglia can also initiate burst activity, and this can be considered a spontaneous phenomenon in the ganglia. 3. 3. Stretching of the adductors for several hours and also abolishing the physiological force loading of the muscles can cause in most cases some change in the frequency of the adductor rhythm, but in each situation both an increase and a decrease occurred. 4. 4. The loading of the adductors for a short period evokes an "on" and "off" effect from the ganglia; however, long-lasting stretching does not cause any significant change in the electrical activity of the latter. 5. 5. No activity increase was recorded at loading from the nerve innervating the anterior adductor. 6. 6. The initiation of the burst activity controlling the fast, rhythmic contractions in Anodonta cygnea is not a reflex response triggered from outside, but is a special property of the central nervous system which can be influenced by afferent inputs only to a limited degree.

AB - 1. 1. The rhythmic phasic contractions of the adductors are synchronous with the burst activity of the ganglia supplying the innervation of the adductors. The burst activity precedes the contraction by about 0·5-1·5 sec. 2. 2. Isolated ganglia can also initiate burst activity, and this can be considered a spontaneous phenomenon in the ganglia. 3. 3. Stretching of the adductors for several hours and also abolishing the physiological force loading of the muscles can cause in most cases some change in the frequency of the adductor rhythm, but in each situation both an increase and a decrease occurred. 4. 4. The loading of the adductors for a short period evokes an "on" and "off" effect from the ganglia; however, long-lasting stretching does not cause any significant change in the electrical activity of the latter. 5. 5. No activity increase was recorded at loading from the nerve innervating the anterior adductor. 6. 6. The initiation of the burst activity controlling the fast, rhythmic contractions in Anodonta cygnea is not a reflex response triggered from outside, but is a special property of the central nervous system which can be influenced by afferent inputs only to a limited degree.

KW - adductor

KW - Anodonta cygnea

KW - ganglia

KW - molluscs

KW - muscle

KW - nerve activity

KW - reflex action

KW - rhythmic activity

UR - http://www.scopus.com/inward/record.url?scp=49649133038&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=49649133038&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:49649133038

VL - 41

JO - Comparative Biochemistry and Physiology - A Physiology

JF - Comparative Biochemistry and Physiology - A Physiology

SN - 1095-6433

IS - 3

ER -