Results 131 to 140 of about 4,505 (172)
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Ultramorphology of the proventriculus in Panorpidae and Bittacidae (Mecoptera)
Micron, 2009The proventriculus is a specialized part of the foregut in the alimentary canal in some insects, varying greatly in its structure across different insect groups. The ultramorphology of the proventriculus in Mecoptera was investigated in eight species of Panorpidae and one of the Bittacidae using light microscopy and scanning electron microscopy.
Shuyu, Liu, Baozhen, Hua
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Proventriculus of Cephalotes ants: A structural and comparative analysis
Micron, 2010The use of optic microscopy and scanning electron microscopy propitiated the comparative examination of the structure of the proventriculus bulb of Cephalotes atratus, Cephalotes clypeatus and Cephalotes pusillus. This portion of the digestive tract possesses highly sclerotized projections which act in the selection of victuals.
Bution, Murillo L. +2 more
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Action of serotonin on gastric (proventriculus) secretion in chickens
Comparative and General Pharmacology, 1971Abstract 1. 1. Serotonin and duodenal distension inhibited basal, histamine-induced, and pentagastrin-induced gastric secretion in chickens. 2. 2. In UML-491 and reserpine pre-treated chickens, the inhibitory effects of duodenal distension and serotonin on gastric secretion were abolished. 3. 3.
W L, Joyner, E, Kokas
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Partial purification of pepsin from turkey proventriculus
World Journal of Microbiology and Biotechnology, 2008In the present study, turkey proventriculus (stomach) was mixed with 10% NaCl (1:2 w/v) and extracted by centrifugation to produce crude extract. The partial purification of the extract was carried out by using Sephadex G-75 resin in gel filtration column chromatography. Crude extract (CE) and fractions obtained by gel filtration were analysed for milk-
Temiz, Hasan +4 more
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The Venous System of the Proventriculus of Duck (Anas domesticus)
The Japanese Journal of Veterinary Science, 1976The proventriculus of duck is lacking in the V. proventricularis dextra and V. proventriculolienalis both of which are present in the chicken. In it the V. lienalis empties directly into the V. portae hepatis dextra. Therefore, most of the blood from the proventriculus of duck is drained by the well-developed V.
T, Nishida, K, Mochizuki
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The proventriculus of some trichopterous larvae
Journal of Zoology, 1967A well‐developed proventriculus is present in larvae of the Polycentropodidae and Hydropsychidae. Its structure varies greatly between species but there is a common bilaterally symmetrical pattern based on a pair of posterior ventral folds. These are continuous with the sides of a ventral gap in the fold of foregut that invaginates into the midgut ...
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Histochemical patterns in the proventriculus of the developing chick
Journal of Morphology, 1967AbstractThe proventriculus of White Leghorn chick embryos (stages 29–45) newly‐hatched chicks, and adult chickens were frozen, sectioned in a cryostat and treated histochemically to identify localizations of alkaline and acid phosphatase, adenosine triphosphatase, 5‐nucleotidase, nucleotide‐diphosphatase, non‐specific glycerophosphatase, glucose‐6 ...
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Oxidative enzyme histochemistry of the chick esophagus and proventriculus
Journal of Morphology, 1968AbstractSuccinic dehydrogenase, NAD and NADP diaphorases, choline oxidase, d‐amino acid oxidase, α‐glycerophosphate dehydrogenase, glutamic dehydrogenase, lactic dehydrogenase and aldolase were identified histochemically in the esophagus and proventriculus of the developing chick embryo.
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The endocrine cells of the chicken proventriculus.
Basic and applied histochemistry, 1983The endocrine cells of the chicken proventriculus were investigated by selective staining techniques, immunohistochemistry and electron microscopy. The following endocrine cell types were identified: 1) Argyrophilic ECL-cells, of unknown function, were very numerous in the 21-day-old chick, but less numerous in the newborn chick; 2) somatostatin ...
USELLINI L +7 more
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Postosmication of submucosal gland cells in the fowl proventriculus
Zeitschrift f�r Zellforschung und Mikroskopische Anatomie, 1963The technique of postosmication has been applied to resting and histamine-stimulated cells in the submucosal glands of the fowl proventriculus. In resting cells, the smooth endoplasmic reticulum, the mitochondria, and occasional vacuole-containing bodies become impregnated, but the Golgi apparatus, or ‘Dalton complex’ remains unaffected.
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