The occurrence of arterio‐venous anastomoses in the tongue of the dog

Brown, Margaret E.

doi:10.1002/ar.1090690304

Cited by 46 publications

(13 citation statements)

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“…These results demonstrate that SP-and CGRP-immunoreactive fibers from the trigeminal ganglion are distribut- The extensive vascular system of the dog tongue serves as a thermoregulatory organ. Numerous arteriovenous anastomoses (AVAs) occur in the lamina propria of the dog tongue (BROWN, 1937;PRITCHARD and DANIEL, 1953), and many physiological (KRONERT et al, 1980;NAGAI and PLESCHKA, 1981 ;PLESCHKA et al, 1987) and electronmicroscopic (IIJIMA et al, 1987) studies have suggested that neuronal control of the AVAs is mediated by adrenergic, cholinergic and also non-adrenergic non-cholinergic transmitters. The tongue receives extensive Innervation of sensory, sympathetic and parasympathetic fibers from different pathways of the cranial nerves.…”

Section: Discussionmentioning

confidence: 99%

An Immunohistochemical Study of Sensory and Autonomic Innervation of the Dog Tongue with Special Reference to Substance P- and Calcitonin Gene-Related Peptide-Containing Fibers in Blood Vessels and the Intralingual Ganglia.

Hino

Masuko

Katsuki

1993

Archives of Histology and Cytology

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Section: Discussionmentioning

confidence: 99%

An Immunohistochemical Study of Sensory and Autonomic Innervation of the Dog Tongue with Special Reference to Substance P- and Calcitonin Gene-Related Peptide-Containing Fibers in Blood Vessels and the Intralingual Ganglia.

Hino

Masuko

Katsuki

1993

Archives of Histology and Cytology

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“…AVAs are common in many cutaneous vascular beds (e.g., hindlinb: Bostroem and Schodel, 1953;bird foot: Schumacher, 1916;Grant and Bland, 1930;digits: Grosser, 1902;Grant and Bland, 1930;Popoff, 1934;Barbolini et al, 1971;human. ear: Richard and Daniel, 1956), as well as in the nasal mucosa (Dawes and Richard, 1953;Cauna, 1970) and tongue (Brown, 1937;Prichard and Daniel, 1953), and have been implicated as playing a major role in temperature regulation (Hoyer, 1877;Grant, 1930;Grant and Bland, 1930;Burton, 1939;Hales et al, 1978). The arrangement of AVAs in vascular casts in the present study closely matches previous descriptions of AVAs in rabbit ears from direct observation in vivo (Grant, 1930;Clark and Clark, 1934a) or from microscopic examination of latex casts (Rossatti, 1956).…”

Section: Discussionmentioning

confidence: 99%

Development of the vascular bed in the rabbit ear: Scanning electron microscopy of vascular corrosion casts

Morris

Bevan

1984

Am. J. Anat.

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The development of the vascular bed in the rabbit ear was investigated using vascular corrosion casts from animals of various ages. Examination of the casts revealed that the arrangement of the major auricular arteries and veins was determined before birth and was maintained during postnatal growth of the ear. Furthermore, the number of arteries branching off the central ear artery and the lateral arteries did not increase with increasing ear length. Scanning electron microscopic examination of lateral segments of adult ear casts revealed many anastomoses between marginal arteries and veins. These arteriovenous anastomoses (AVAs) occurred singly, in pairs, or in clusters of three to six. Their size and shape were variable, even in the same cast. The central segment of many AVA casts showed surface impressions of endothelial cell nuclei which were different from the impressions on adjacent arteries and veins. Arteriovenous anastomoses were also detected in ear casts from animals as young as 8 days. The density of AVAs in lateral ear segments ranged from 95-165 cm-2 in 8- to 11-day-old rabbits to 80-115 cm-2 in adults. However, estimates of the total number of AVAs in the lateral ear margin indicated that AVAs continued to be formed at a steady rate during growth of the ear. During the early neonatal period the cutaneous capillary plexuses developed prominent tufts projecting toward the skin surface, which were apparently associated with developing hair follicles. These capillary tufts were not seen in casts from fetal or adult rabbits.

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“…The number of AVA was found to be high in the AF region, decreasing caudally, and in the LM region they were altogether absent. The characteristic epithelioid cells of the wall of AVA could also play a role in the tongue as a site for heat exchange [Brown, 1937] by either increasing or decreasing the blood flow to the area in response to ambient temperature changes. Finally, AVA can divert large quantities of blood from the arterial to the venous side due to their conspicuous occur rence in the AF region.…”

Section: Discussionmentioning

confidence: 99%

Histomorphologic Studies of the Nasal Cavity of Sheep (<i>Ovis aries</i>) and Its Significance in Temperature Regulation of the Brain

Khamas¹,

Ghoshal²

1982

Cells Tissues Organs

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10 sheep were used for light microscopic studies to describe the distributions of the blood vessels, epithelium, and glands of the nasal cavity. The animals were killed following intramuscular injection of Rompun solution (xylazine hydrochloride). The heads were sawed and tissues were taken from the alar fold, respiratory, and olfactory regions. More vascularity was noticed in areas of the nasal cavity that were in direct contact with the airstream. Moreover, in the submucosa, the presence of arteriovenous anastomoses, collagen fibers, elastic fibers, thick-walled or cushion veins, and free smooth muscle cells was observed, gradually decreasing from the rostral to caudal regions. The tunica media of the arteries was very thin in the vestibular region and relatively thicker in the respiratory region. On the other hand, luminal diameters of the arteries were very small in the respiratory region and relatively larger in the vestibular region. In addition, a large number of intra-arterial bolsters was present in the respiratory region, but there were fewer in the olfactory region, and they occurred with still less frequency in the vestibular region.

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The occurrence of arterio‐venous anastomoses in the tongue of the dog

Cited by 46 publications

References 0 publications

An Immunohistochemical Study of Sensory and Autonomic Innervation of the Dog Tongue with Special Reference to Substance P- and Calcitonin Gene-Related Peptide-Containing Fibers in Blood Vessels and the Intralingual Ganglia.

An Immunohistochemical Study of Sensory and Autonomic Innervation of the Dog Tongue with Special Reference to Substance P- and Calcitonin Gene-Related Peptide-Containing Fibers in Blood Vessels and the Intralingual Ganglia.

Development of the vascular bed in the rabbit ear: Scanning electron microscopy of vascular corrosion casts

Histomorphologic Studies of the Nasal Cavity of Sheep (<i>Ovis aries</i>) and Its Significance in Temperature Regulation of the Brain

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