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Tuesday, August 11, 2020 | History

2 edition of Action of various poisons upon nerve-fibres and peripheral nerve-cells found in the catalog.

Action of various poisons upon nerve-fibres and peripheral nerve-cells

J. N. Langley

Action of various poisons upon nerve-fibres and peripheral nerve-cells

by J. N. Langley

  • 143 Want to read
  • 31 Currently reading

Published by [s. n.] in [s. l.] .
Written in English

    Subjects:
  • Neurofibrils.,
  • Nerves, Peripheral.,
  • Poisons -- Physiological effect.

  • Edition Notes

    Statementby J.N. Langley and W. Lee Dickinson.
    ContributionsDickinson, W. Lee.
    The Physical Object
    Paginationp. [509]-527 ;
    Number of Pages527
    ID Numbers
    Open LibraryOL20533893M

    Size of myelinated nerve fibres is not increased by expansion of the peripheral field in cats Article in The Journal of Physiology (Pt 3) June with 66 Reads How we measure 'reads'. Electric interaction between two adjacent nerve fibres. J Physiol. Feb 14; 97 (4)– [PMC free article] Katz B. A note on interaction between nerve fibres. J Physiol. Mar 31; (4)– [PMC free article] Langley JN, Dickinson W Lee. Action of Various Poisons upon nerve-fibres and Peripheral by:

    F. H. SCOTT. limited'. Sherrington2has also noted that the reflexes obtained from a given place of the skin soon cease if the stimulus be repeated frequently, although similar reflexes maystill be obtained from neigh- bouring areas. Bethe3 has also noticed that a cut nerve in frogs loses its sensitiveness much morerapidly if it be subjected to stimula- tion than if it be left at by: Neurons that carry incoming information from the sensory receptors to the brain and spinal cord. Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands. .

    A neuron, neurone (old British spelling) or nerve cell, is an electrically excitable cell that communicates with other cells via specialized connections called is the main component of nervous tissue in all animals except sponges and placozoa. Plants and fungi do not have nerve : D   But now, a group of French researchers have demonstrated that nerve fibres in the peripheral nervous system can control a reflex of the intestines without producing action potentials.


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Action of various poisons upon nerve-fibres and peripheral nerve-cells by J. N. Langley Download PDF EPUB FB2

Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (M), or click on a page image below to browse page by by: Langley JN, Dickinson W Lee. Action of Various Poisons upon nerve-fibres and Peripheral nerve-cells.

J Physiol. Dec; 11 (Suppl)– [PMC free article]Cited by: Action of Various Poisons upon nerve-fibres and Peripheral nerve-cells By J. Langley and W. Lee Dickinson Topics: ArticlesAuthor: J. Langley and W. Lee Dickinson. Langley JN, Sewall H. On the Changes in Pepsin-forming Glands during Secretion.

J Physiol. Dec; 2 (4)– [PMC free article] []Langley JN, Dickinson W Lee. Action of Various Poisons upon nerve-fibres and Peripheral nerve-cells. Ambache, N.,Unmasking, after cholinergic paralysis by botulinum toxin, of a reversed action of nicotine on the mammalian intestine, revealing the probable presence of local inhibitory ganglion cells in the enteric plexus, Brit.

Pharmacol. 6: PubMedGoogle Scholar. Exposure to mild intermittent hypoxia increases loop gain and the arousal threshold in participants with obstructive sleep apnoea. Mammalian Nerves and the Compound Action Potential. Mammalian nerves consist of many axons running in parallel with each other.

Larger diameter axons conduct action potentials faster than smaller fibres, and when electrical stimuli are applied, the voltage necessary to initiate an action potential in large axons is smaller than for smaller ones. Insecticides: Action and Metabolism provides a comprehensive review of the action of insecticides and a survey of their metabolism.

This book discusses the toxicology of insecticides. Organized into 17 chapters, this book begins with an overview of the mechanisms whereby toxicants exert their effects.

The classification of peripheral nerves in the peripheral nervous system (PNS) groups the nerves into two main groups, They are useless. the somatic and the autonomic nervous systems. Together, these two systems provide information regarding the location and status of the limbs, organs, and the remainder of the body to the central nervous system (CNS) via nerves and ganglia present outside of.

Starting from his own observations on the antagonistic action of curari and nicotine upon peripheral nerve cells, the author discusses the nature of that action. The nerves to the bladder were exposed-the bladder itself being previously filled with a mixture of normal urine and warm salt solution, so that the bladder could contract under nearly.

Thus, while the observations 2 which have already been made with daboia poison show that it has a marked action on the blood plasma, on the blood corpuscles, both red and white, on the endo- thelium of the capillary vessels, and on the cells of various organs, some experiments made by one of us along with Dr.

Hanna 3 point to the conclusion Cited by: 47 J N Langley and W L Dickinson, ‘Action of various poisons upon nerve-fibres and peripheral nerve-cells’, J. Physiol.,– On the tradition of physiological experimentation with alkaloids, going back to the work of François Magendie, see J E Lesch, Science and medicine in France: the emergence of experimental physiology, –, Cambridge, MA, Harvard University Press, Cited by: These results tendedto showthat all three poisons had, like nicotine, a paralysing effect on pre-ganglionic nerve fibres in general.

I showed later () that the stimulating action of nicotine, which preceded the paralysis, occurred after degeneration of the pre-ganglionic nerves, i.e. that nicotine acted directly on the peripheral nerve by: Langley's first study was concerned with the physiological effects of the drug.

jaborandi (containing pilocarpine), which he examined in the frog, dog, rat and rabbit, noting in particular its decelerating effect on the heart rate and a similarity of its action with.

that of the alkaloid physostigmine. The time is in minutes from the control blood sample. meability of capillaries, so allowing plasma to P escape into the peripheral tissues. In order to determine the degree of depression PH of the blood pressure resulting from the rapid injection of tubocurarine, an experiment was carried out, the results of which are shown in figure by: 3.

In physiology, an action potential occurs when the membrane potential of a specific cell location rapidly rises and falls: this depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells, called excitable cells, which include neurons, muscle cells, endocrine cells, glomus cells, and in some plant cells.

Journal of the neurological Sciences Elsevier Publishing Company, Amsterdam - Printed in The Netherlands The Effects of Diphtheria Toxin on Developing Peripheral Myelin in Culture D. HUGHES, H. NARANG AND WENDY KELSO Medical Research Council Demyelinatino Diseases Unit, Newcastle General Hospital, Newcastle upon Tyne NE4 6BE (Great Britain) (Received 9 September, ) Cited by: 2.

INTRODUCTION ABOUT NERVE FIBER • A nerve fiber is a thread like extension of a nerve cell and consists of an axon and myelin sheath (if present) in the nervous system. MYELINSHEATH In peripheral nervous system it is formed by schwann’s cell. While in case of central nervous system it is formed by oligodendroglia.

Ascending nerve fibres that relay sensory information concerning heat and pain, from the periphery, up towards the brain (also referred to as the lateral _____). referred pain Defined as pain arising from one region of the body that is perceived in another area, distant from its source (as an example, angina pectoris may cause ____ in the left.

The functions of nerve cells which form centres of action may be classified thus: 1. Reflexion. Many cells are capable of reflecting impulses received from an afferent nerve; that is to say, they send it by an efferent nerve to some active tissue, such as a muscle or gland.

This kind of direction is spoken of as a simple reflex action. the cylindrical bundle of nerve fibers and associated tissue that is enclosed in the spine and connects nearly all parts of the body to the brain, with which it forms the central nervous system.Nerve Cells and Nerve Fibres The structural unit of the nervous system is a highly specialised cell consisting of a cell body (termed the nerve cell) and a series of .Autonomic.

The observations made by Dickinson and myself (1 ) on the action of nicotine gave a new method of investigating the connexion of nerve fibres with peripheral nerve cells.

In describing the results of such investigations and of others suggested by it, I felt the need of a new term for the system of nerves I was deahng with.