Electrical and mechanical activity in intestinal muscles of several invertebrate animals

Autor: T Nagai, C.L Prosser, Richard A. Nystrom
Rok vydání: 1965
Předmět:
Zdroj: Comparative Biochemistry and Physiology. 14:53-70
ISSN: 0010-406X
DOI: 10.1016/0010-406x(65)90008-3
Popis: 1. 1. Conduction velocity in cm/sec of action potentials was for intestines of Thyone 4–6, Arbacia 5·9, Spisula 8·6, Busycon 9, Loligo 12, Homarus 9·5. 2. 2. Spikes were blocked by tricaine in Spisula, procaine in Libinia, reduced by procaine in Homarus and Loligo, not reduced by nerve-blocking drugs in Thyone. 3. 3. Contractions were slow in Thyone, fast in Loligo, Libinia and Homarus. Spisula intestine showed fast and slow contractions, each with different excitation time. Ganglionic stimulation in Spisula revealed phasic and tonic excitatory, also inhibitory innervation. 4. 4. Echinoderm intestines conducts via muscles as do those of vertebrates; in molluscs and crustaceans conduction is nervous.
Databáze: OpenAIRE