Abstract
The pyloric region, as described by Torgersen (1) in 1942, consists of a circular thickening of the innermost circular muscle layer found at the junction of the stomach and duodenum. Schulze-Delrieu et al. (2) confirmed the presence of this ring in all mammalian species studied, albeit with some variation in size. This was termed the distal pyloric muscle loop. A second thickened muscular ring, the proximal pyloric muscle loop, has been identified in a number of species, and is connected to the distal pyloric muscle loop by a fan-like arrangement of oblique muscle fibres forming a loop over the distal antrum, running from the greater to the lesser curvature. These two circular muscle loops and their connecting fibres meet at a ridge, or torus, located on the lesser curvature aspect of the stomach. Figure 1 illustrates schematically the muscular anatomy of the human pyloric area.
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References
Torgersen, J., 1942, The muscular build and movements of the stomach and duodenal bulb, Acta Radiol., 45(suppl):1.
Shulze-Delrieu, K. and Wall, J.P., 1984, Determinants of flow across isolated gastroduodenal junctions of cats and rabbits, Am. J. Physiol., 245:G357.
Keet, A.D.Jr., 1957, The prepyloric contractions in the normal stomach, Acta Radiologica, 48:413.
Daniel, E.E., Berezin, I., Allescher, H.D., Manaka, H. and Posey-Danier, V.P., 1990, Morphology of the canine pyloric sphincter in relation to function, Can. J. Physiol. Pharmacol., in press.
Code, C.F., 1970, The mystigue of the gastroduodenal junction, Pendic. Rev. Gastroenterol., 2:20.
Gonda, T., Daniel, E.E., McDonald, T.J., Fox, J.E.T., Brooks, B.D., Oki, M., 1990, The distribution of galanin-immunoreactive nerves and possible functions of a new neuropeptide in dog gastrointestinal tract. Comparison to VIP, Am. J. Physiol., 256:G884.
Wattchow, D.A., Cass, P.J., Furness, J.B., 1987, Abnormalities of peptide-containing nerve fibers in infantile hypertensive pyloric stenosis, Gastroenterology, 92:443.
Edin, R., 1980, The vagal control of the pyloric motor function: a physiological and immunohistochemical study in cat and man, Acta Physiol. Scand., 485 (suppl):1.
Lidberg, P., Edin, R., Lundberg, J.M., The involvement of substance P in the vagal control of the feline pylorus, Acta Physiol. Scand., 114:307.
Allescher, H.-D., Daniel, E. E., Dent, J., Fox, J. E. T., Kostolanska, F., 1988, Extrinsic and intrinsic neural control of pyloric sphincter pressure in the dog, J. Physiol. (Lond.), 401:17.
Costa, M., Gabella, G., 1971, Adrenergic innervation of the alimentary canal, Z. Zellforch, 122:357.
Cai, W.Q., Gabella, G., 1984, Structure and innervation of the musculature at the gastroduodenal junction in the guinea pig, J. Anat., 139:93.
Daniel, E.E., Posey-Daniel, V.P., 1984, Effect of scorpion venom on structure and function of lower esophageal sphincter (LES) and body circular muscle (BCM) from oppossum, Can. J. Physiol. Pharmacol., 62:360.
Barajas-Lopes, C., Berezin, I., Daniel, E.E., Huizinga, J.D., 1990, Role of the interstitial cells of Cajal in colon pace-maker generation, Am. J. Physiol., 257:C830.
Daniel, E.E., Posey-Daniel, V.P., 1984, Neuromuscular structures in oppossum esophagus: role of interstitial cells of Cajal, Am. J. Physiol., 9:G305.
Allescher, H.-D., Daniel, E.E., Fox, J.E.T., Kostolanska, F., 1988, Extrinsic and intrinsic neural control of pyloric sphincter pressure in the dog, J. Physiol. (Lond.), 401:17.
Grundy, D., 1988, Vagal control of gastrointestinal function, Bailliere’s Clin. Gastroenterol., 2:23.
Allescher, H.-D., Daniel, E. E, Dent, J., Fox, J. E. T., Kostolanska, F., 1989, Neural reflex of the canine pylorus to intraduodenal acid infusion, Gastroenterology, 96:18.
Ormsbee, H.S. III, Fondacaro, J.D., 1985, Action of serotonin on the gastrointestinal tract, Proc. Soc. Exp. Biol. Med., 178:333.
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Tougas, G., Allescher, HD., Dent, J., Daniel, E.E. (1991). Sensory Nerves of the Intestines: Role in Control of Pyloric Region of Dogs. In: Costa, M., Surrenti, C., Gorini, S., Maggi, C.A., Meli, A. (eds) Sensory Nerves and Neuropeptides in Gastroenterology. Advances in Experimental Medicine and Biology, vol 298. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0744-8_18
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DOI: https://doi.org/10.1007/978-1-4899-0744-8_18
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