The organization of the salivary gland microcirculation

The Journal of Physiology
P A Fraser, L H Smaje

Abstract

1. The microvasculature of the rabbit submandibular salivary gland has been investigated employing in vivo microscopy, blood flow measurements, latex casts, microsphere injections and examination of fixed sections of the gland.2. Two principal microcirculations were distinguished in the living gland, one supplying the acini and the other the intralobular ducts. Parasympathetic nerve stimulation (2, 5 or 10 sec(-1)) elicited different responses in each of the two microcirculations. Flow in the capillaries around the acini slowed initially before increasing. In contrast, flow in the intralobular duct capillaries increased soon after beginning stimulation.3. In some experiments both whole gland flow and microvascular flow were monitored simultaneously. Whole gland flow increased at the same time as flow in the acinar capillaries was decreasing and as flow in the intralobular duct capillaries increased. Flow in acinar capillaries increased about 5 sec after glandular flow started to increase.4. These observations could be explained if either the vascular beds of the acini and the intralobular ducts were arranged in parallel or if arteriovenous anastomoses were to shunt the acinar circulation. No such anastomoses were found in latex...Continue Reading

Citations

Jan 1, 1991·Acta Oto-laryngologica. Supplementum·E HagelqvistM G Lind
Sep 1, 1981·Microvascular Research·N Lifson, C V Lassa
Nov 1, 1996·The Annals of Thoracic Surgery·R N GatesP A Chang
Sep 1, 1993·Microscopy Research and Technique·B Tandler
Feb 1, 1987·Journal of Dental Research·L H Smaje, J Gamble
Jun 10, 2003·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Rachel KoshiV I Mathan
Nov 22, 2012·Dental Update·Akhil Anilkumar Shankar, Rishikesh Chandrasen Dandekar

Related Concepts

Metazoa
Structure of Anatomic Arteriovenous Anastomosis
Blood Capillaries
Microcirculation
Latex Spheres
Parasympathetic Nervous System
Chinchilla Rabbits
Regional Blood Flow
India Rubber
Submandibular Gland

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