Regulation and restoration of motoneuronal synaptic transmission during neuromuscular regeneration in the pulmonate snail Helisoma trivolvis The relevant locations of concern are (I) impulse propagation along the motor axon into axon branches, (II) neuromuscular transmission and (III) propagation of action...
production of a neural impulse is called theall or none principle.Once triggered, the action potential continues the length of the axon without diminishing because the action potential depends upon cell membrane permeability, a cell characteristic, and not upon the strength of the triggering stimulus...
As discussed in the preceding chapters, the passage of the nerve impulse along the axon is influenced by the nature of the ionic environment and the previous history of the axon. This can also be true for several other parts of the nerve cell, such as the plasma and dendritic membranes ...
, a neuron has a nucleus (as do all living cells) that, together with the perinuclear cytoplasm, forms the cell body, or perikaryon. It is here that synthesis of macromolecules takes place. Some of these are transported along the axoplasm (the cytoplasm in the axon) to the nerve endings...
describe the structure of myelinated nerve fibers: Schwann cells form the myelin sheath; envelope the axon and deposit layers of membrane containing the lipid sphingomyelin, which is an insulating substance that prevents ion influx; exist to make myelin ...
of vesicles, (3) the architecture of axonal release sites and release site density along an axon, (4) the balance between diffusion, reuptake and degradation of the released transmitter, and (5) the types of transmitter receptors and their relative positioning to transmitter release sites. While...
Cross talk--the paradoxical transmission of a nerve impulse. Dale HH. WJ Gardner - 《Archives of Neurology》 被引量: 95发表: 1966年 Numerical Simulation of Motility Patterns of the Small Bowel. 1. Formulation of a Mathematical Model of the propagation of excitation along the afferent and effer...
Purkinje soma, near the DCN, whereas few could be found more proximal to the soma (Fig.1C). These swellings have been described as indication of axon deterioration leading to cerebellar damage and degeneration23. Thus, it could be speculated that the proximal axon close to the nerve terminal...
neuron which contain many branches. The dendrites transmit electrical stimulation received from other neurons to the cell body or the soma. On the other hand, an axon is the part of the neuron that transmits nerve signals away from the soma to other neurons. Most neurons have only one axon...
A brief reversal of electrical polarization across the neuronal membrane that results from the opening and closing of voltage-gated ion channels and produces the nerve impulse that permits communication between neurons. Glycolysis A partial glucose metabolism that occurs in the cytosol or on membrane su...