Abstract
The effects of sympathetic nerve activation j on tracer disappearance rate and local blood content J in the cat nasal mucosa were studied by measuring local disappearance of 125I− and changes in gross pulse rate from 131I-labelled serum albumin monitored over i the nose. Major changes in the tracer disappearance rate were seen in the frequency range of 0.5-6.0 imp/sec while similar changes in the local blood content occurred at 0.1-0.5 imp/sec, indicating a functional differentiation in the vasoconstrictor control of (the exchange and capacitance vessels during low sympathetic tone. The observed responses were shown to ' be due to activation of sympathetic adrenergic nerves and receptors of the a-type. No evidence of vasodilator influence due to stimulation of β-receptors or sympathetic cholinergic vasodilator fibers was found 1
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
