Cervical Medulla Spinal Cord
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. Electrophysiological properties of rostral medullary respiratory neurones in the cat: an intracellular study.
1. We recorded the membrane potentials of sixty-three respiratory neurones in the rostral, ventral medulla of decerebrate vagotomized cats. Stable recordings were obtained in thirty-eight expiratory and twenty-five inspiratory neurones. Axonal projections were identified by antidromic invasion after electrical stimulation of the region of the dorsal respirat
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14. Differential expression of insulin-like growth factor genes in rat central nervous system.
A sensitive solution-hybridization assay was used to investigate the expression of genes encoding insulin-like growth factors I and II (IGF-I and -II) in the rat central nervous system (CNS). mRNAs for both IGFs are synthesized throughout the CNS of adult rats but exhibit distinct regional differences for each growth factor. IGF-I mRNA is 8-10 times more abu
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15. Changes in plasma noradrenaline and adrenaline associated with central and peripheral thermal stimuli in the pig.
1. The role of catecholamines in thermogenesis has been investigated in trained young pigs in various situations which increases heat production. Plasma noradrenaline and adrenaline concentrations were estimated by radioenzymic assay of samples taken from an indwelling jugular catheter to prevent disturbance and stress. 2. During 3 hr at ambient temperatures
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16. Neural regulation on the active sodium-potassium transport in hypokalaemic rat skeletal muscles.
C.N.S.-induced suppression of muscle Na-pump activity was studied in fast 'twitch' muscle, extensor digitorum longus, of hypokalaemic rats which were fed a K-deficient diet for 0-9 weeks. The results were compared with those of slow 'tonic' muscle, soleus, reported previously. K-deficient diet caused blood hypokalaemia and a considerable K+ loss and Na+ accu
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17. Contribution of oxygen-sensitive neurons of the rostral ventrolateral medulla to hypoxic cerebral vasodilatation in the rat.
1. We sought to determine whether hypoxic stimulation of neurons of the rostral ventrolateral reticular nucleus (RVL) would elevate regional cerebral blood flow (rCBF) in anaesthetized paralysed rats. 2. Microinjection of sodium cyanide (NaCN; 150-450 pmol) into the RVL rapidly (within 1-2 s), transiently, dose-dependently and site-specifically elevated rCBF