Vibrissae
Mostrando 1-12 de 29 artigos, teses e dissertações.
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1. Facial nerve identification with fluorescent dye in rats
PURPOSE The parotidectomy technique still has an elevated paresis and paralysis index, lowering patient life's quality. The correct identification of the facial nerve can prevent nerve damage. Fluorescent dye identifies nerves in experimental studies but only few articles focused its use on facial nerve study in parotidectomies. We aimed to stain the rat fa
Acta Cir. Bras.. Publicado em: 2016-02
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2. Perfil FitogrÃfico e FarmacolÃgico da Aspidosperma pyriolium mart. "Ensaios prÃ-clÃnicos"
The use of natural products has been growing remarkably in recent years. The search pharmacology of medicinal plants has not only brought about important advances for the treatment of various diseases, but also has provided extremely useful tools for the theoretical study of physiology and pharmacology. Aspidosperma pyrifolium Mart. occurs in the caatinga an
Publicado em: 2008
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3. AÃÃo do campo eletromagnÃtico de 60 Hz, 3μT, em ratas prenhas submetidas à Dieta BÃsica Regional: regulaÃÃo hormonal e metabÃlica das ratas prenhas e maturaÃÃo reflexa e somÃtica da prole
The aim of the present study was to observe how exposition of the pregnant rats to the electromagnetic field (EMF) at 60Hz, 3μT for 2 hours per day, during twenty one days and/or using the Regional Basic Diet (RBD) influenced the regulation of the hormonal and metabolic concentrations in pregnant rats, and their influence on the reflex and somatic matur
Publicado em: 2005
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4. Efeito da remoção das vibrissas mistaciais sobre o comportamento exploratório do rato no labirinto em cruz elevado sob condições de claridade e obscuridade. / Effects of mistacial vibrissae removal on the rat exploratory behavior in the elevated plus-maze under two illumination conditions.
Exploratory behavior in the rat is characterized by a preference for dark environments and by a trend to remain close to vertical surfaces(thigmotaxis). When allowed to freely explore an elevated plus-maze a rat will exhibit a smaller number of entries into the open arms and a smaller time spent in them. This characteristic pattern of behavior can be reverte
Publicado em: 1999
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5. The musculature of the mystacial vibrissae of the white mouse.
Striated muscles of the mystacial region of the common albino mouse have been described. They were divided into two categories: extrinsic and intrinsic. The four extrinsic muscles (m. levator labii superioris, m. maxillolabialis, m. transversus nasi, m. nasalis) belong to the facial muscles. They originate on the skull and insert into the corium between the
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6. Tactile Experience Induces c-fos Expression in Rat Barrel Cortex
Understanding gene expression that is responsive to sensory stimulation is central to elucidate molecular mechanisms underlying neuronal plasticity. In this study we demonstrate two new methods of stimulating whiskers that provide major sensory input to rat neocortex. In the first paradigm, animals were placed on the top of a cylinder and their vibrissae wer
Cold Spring Harbor Laboratory Press.
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7. Innervation of hairs in the facial skin of marsupial mammals.
The innervation of pelage, guard hairs and vibrissae hairs was studied in five species of marsupial mammals by means of electron microscopy for the first time. This study showed that members of different superfamilies in marsupial mammals displayed the same pattern of hair innervation. This also resembled the pattern seen in the placental mammals. All types
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8. The postnatal growth of the nerves of vibrissae*
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9. Crossmodal changes in the somatosensory vibrissa/barrel system of visually deprived animals.
Cats deprived of vision from birth adapt remarkably well to their situation and show little behavioral impairment. They seem to compensate for their lack of vision by relying more on their auditory and tactile senses. We report here that the facial vibrissae, which are most important for tactile orientation in many animals, show supernormal growth in both ca
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10. Histochemical changes in cytochrome oxidase of cortical barrels after vibrissal removal in neonatal and adult mice.
The posteromedial barrel subfield of the somatosensory cortex of mice was examined histochemically for cytochrome oxidase activity (cytochrome c oxidase; ferrocytochrome c:oxygen oxidoreductase, EC 1.9.3.1). In normal mice a high enzymatic activity was found within the barrel hollows, rather than in the sides and septa. Electron microscopic examination indic
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11. Scanning electron microscopy of hair from different regions of the body of the rat.
Surface features of rat hairs from different parts of the body have been studied by scanning electron microscopy. Ear hairs and vibrissae are similar in having much smaller cuticular scales than hairs from other parts of the body. The scales on the head hairs of females are smaller than those of males.
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12. A spatial relationship between innervation and the early differentiation of vibrissa follicles in the embryonic mouse.
The present study has demonstrated that the mystacial vibrissae of the mouse began to develop at about 12 days of gestation on two plates of thickened ectoderm called the 'whisker pads' which were located on either side of the snout above the margin of the upper lip. Each whisker pad was traversed by five rostrocaudal skin ridges. The individual vibrissae de