The role of venous pressure in regulation of output from the heart of the Octopus, Eledone Cirrhosa (Lam.)
The role of venous pressure in regulation of output from the heart of the Octopus, Eledone Cirrhosa (Lam.)
1. The influence of perfusion pressure on stroke volume and heart rate was examined in the isolated ventricle. Input pressure, within the physiological range (10–20 cm of water), had a direct effect upon stroke volume and heart rate. Output back pressure had an inverse effect upon stroke volume and no effect upon heart rate.
2. Sites that could vary input pressure were investigated by selective denervation in the whole animal. The results indicated that the efferent branchial vessel and auricle may be involved, as well as the branchial hearts and lateral venae cavae.
3. It is proposed that the pressure of venous blood has a limited effect upon ventricular output in vivo.
243-255
Smith, P.J.S.
003de469-9420-4f12-8f0e-8e8d76d28d6c
August 1981
Smith, P.J.S.
003de469-9420-4f12-8f0e-8e8d76d28d6c
Smith, P.J.S.
(1981)
The role of venous pressure in regulation of output from the heart of the Octopus, Eledone Cirrhosa (Lam.).
Journal of Experimental Biology, 93, .
Abstract
1. The influence of perfusion pressure on stroke volume and heart rate was examined in the isolated ventricle. Input pressure, within the physiological range (10–20 cm of water), had a direct effect upon stroke volume and heart rate. Output back pressure had an inverse effect upon stroke volume and no effect upon heart rate.
2. Sites that could vary input pressure were investigated by selective denervation in the whole animal. The results indicated that the efferent branchial vessel and auricle may be involved, as well as the branchial hearts and lateral venae cavae.
3. It is proposed that the pressure of venous blood has a limited effect upon ventricular output in vivo.
Text
243.full.pdf
- Version of Record
Restricted to Repository staff only
Request a copy
More information
Published date: August 1981
Identifiers
Local EPrints ID: 190597
URI: http://eprints.soton.ac.uk/id/eprint/190597
ISSN: 0022-0949
PURE UUID: 835df8c5-4a01-4fbf-a038-2be495c79217
Catalogue record
Date deposited: 17 Jun 2011 10:10
Last modified: 15 Mar 2024 03:39
Export record
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
