Fascicles
Mostrando 13-24 de 61 artigos, teses e dissertações.
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13. The fibre bundle anatomy of human cruciate ligaments.
The cruciate ligaments of the knee consist of numerous fascicles, groups of which comprise fibre bundles. The stabilising function of these ligaments is established by changes in the lengths and orientations of the fascicles. Understanding the function of knee ligaments thus requires an understanding of their 3-dimensional fascicle architecture. Hitherto, th
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14. Structure and composition of the outer connective tissue sheaths of peripheral nerve.
A regular pattern of parallel reflections with a periodicity of approximately 39 microns has been detected on peripheral nerve fascicles. The reflections have been found to originate from a layer of wavy epineurial collagen fibrils arranged in register around the entire circumference of the fascicle. The waves were observed to be disposed in parallel with th
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15. Cutaneous afferent activity in median and radial nerve fascicles: a microelectrode study.
Cutaneous afferent activity was recorded in fascicles of the median and radial nerves of normal subjects using percutaneous microelectrodes. Multi-unit fascicular responses were dominated by activity in large myelinated fibres. Easily tolerated electrical stimuli evoked the full spectrum of fast and slow myelinated fibre activity but more intense levels were
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16. In vivo behaviour of human muscle tendon during walking.
In the present study we investigated in vivo length changes in the fascicles and tendon of the human gastrocnemius medialis (GM) muscle during walking. The experimental protocol involved real-time ultrasound scanning of the GM muscle, recording of the electrical activity of the muscle, measurement of knee- and ankle-joint rotations, and measurement of ground
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17. Microneurography in relation to intraneural topography: somatotopic organisation of median nerve fascicles in humans.
Microneurography was performed in median nerve sensory fascicles with concentric needle electrodes and with conventional tungsten microneedles. The latter electrodes preferentially recorded activity from the myelinated fibres in the whole fascicle. By contrast, due to its special design, a concentric needle can record activity selectively from even a small p
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18. The afferent volleys responsible for spinal proprioceptive reflexes in man
1. To define the neural volleys responsible for the Achilles tendon jerk and the H reflex, muscle afferent activity was recorded using micro-electrodes inserted percutaneously into appropriate fascicles of the tibial nerve in the popliteal fossa.
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19. Surface Rodlets of Tilletia indica Teliospores
Tilletia indica teliospores were studied by use of thin sections and freeze-etch replicas. Surfaces of these spores have rodlet patterns which differ from those previously reported for spores of other fungi. The rodlets on T. indica teliospores average 240 nm in length and are not grouped into fascicles.
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20. Straight Mutants of Spirillum volutans Can Swim
Nonhelical mutant cells of Spirillum volutans ATCC 19554 can swim as fast as the helical cells. Consequently, a helical cell shape is not required for motility of this species, and the function of the polar flagellar fascicles is not merely to cause rotation, and therefore translocation, of the corkscrew-shaped cell.
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21. Effects of the Jendrassik manoeuvre on muscle spindle activity in man.
Twenty-eight mechanoreceptive units identified as primary or secondary spindle afferents were sampled from muscle nerve fascicles in the median, peroneal, and tibial nerves of healthy adult subjects. The responses of these units to sustained passive muscle stretch, to passive stretching movements, to tendon taps, and electrically-induced muscle twitches were
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22. Evoked skin sympathetic nerve responses in man.
Activity in human unmyelinated efferent nerve fibres was recorded from seven upper limb cutaneous nerve fascicles. The activity induced by contralateral nerve trunk stimulation or tone burst was averaged and could be compared providing the stimuli were delivered at random times and in a random sequence. The average evoked sympathetic nerve responses to nerve
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23. Innervation of the human gastric wall.
The intrinsic innervation of the human gastric wall was studied by means of (1) demonstration of the acetylcholinesterase activity, (2) fluorescence microscopy, and (3) electron microscopy. The cholinergic innervation was rich: in the mucosa, a dense three dimensional network consisting of single delicate varicose acetylcholinesterase-positive axons and smal
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24. The variable clinical manifestations of ulnar neuropathies at the elbow.
In twenty-five cases of ulnar neuropathy at the elbow, the involvement of the fibres from three sensory and to four motor branches were examined clinically and, where possible, electrophysiologically. Of the sensory fibres, those from the terminal digital nerves were most commonly involved. The fibres to the hand muscles were much more frequently involved th