Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Hypoglossal"”.
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Modulation of Hypoglossal Motoneurons by Nitric Oxide
… the United States (Parish & Somers, 2004). The hypoglossal motor nucleus (HMN) controls genioglossus muscle tone and is critically important for maintaining airway patency; loss of excitatory input to the HMN during sleep results in disfacilitation of hypoglossal motoneurons, increased airway …
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Changes in the Morphology of Hypoglossal Motor Neurons in the Brainstem of Developing Rats
… descending outputs from higher CNS structures. Hypoglossal motoneurons (XII MNs) receive inputs from respiratory premotor neurons in the medulla. Previous studies in rodents have demonstrated significant changes in breathing control during the first three weeks of life, with a sensitive period …
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Developmental Nicotine Exposure And Its Effects On Morphology And Electrophysiology Of Hypoglossal Motoneurons In The Neonatal Rat
… DNE altered the structure and function of the hypoglossal motoneurons (XIIMNs) over the first few days post-parturition. Previous work in XIIMNs demonstrated an increase in cellular excitability (Pilarski et al., 2011), alterations in synaptic transmission among respiratory-related neurons …
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The effect of isometric tongue exercise in a novel rodent model of dysphagia
… for selective death of motor neurons in the hypoglossal nucleus, a brainstem region that directly innervates the tongue via the hypoglossal nerve. Our goal is to investigate the effect of tongue exercise on tongue function in three groups of male rats: 1) toxin injection plus exercise (n=7); …
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Capsaicin-sensitive area in the ventral surface of the rat medulla
… ventral surface of the medulla, at the exit of hypoglossal nerve roots in acute experiments on rats. Injection of 5-50 nl 0.01% capsaicin to the rostral region of the capsaicin-sensitive area was accompanied by the increase of arterial pressure and heart rate while injection to the caudal region …
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Development and Evolution of the Skull-Neck Boundary: Insights from Amphibian Model Species
… to track somitic contributions to the skull, hypoglossal nerve complex morphological data, and traditional whole-mount cartilage and bone staining techniques. Finally, I perturbed Hox gene expression patterns to produce homeotic transformations via exogenous retinoic acid and a retinoic acid …
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Some aspects of biochemistry of fibrous proteins in brain
… events following section of the XIIth cranial (hypoglossal) nerve in the rat, to see what part actin and tubulin play in the withdrawal and re-establishment of synaptic boutons: to investigate synapse modelling. Quantitative protein changes were measured by polyacrylamide gel electrophoresis. …
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Acute and Chronic Effects of Artificial Rearing on Rat Genioglossus Muscle
… through stimulation of the medial branch of the hypoglossal nerve. Following physiological experimentation, muscle samples were removed and stored for MHC analysis. Comparisons were made between AR and DR groups at P14 and P42. At P14 maximum tetanic tension and fatigue index were lower in the AR …
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Plasticity of Brainstem Motor Systems in Response to Developmental Nicotine Exposure
Developmental nicotine exposure (DNE) is known to cause abnormal development of multiple brain regions and results in impaired control of breathing and altered behaviors that rely on proper coordination of the muscles of the tongue. The adverse effects of nicotine are presumably caused by its …