nerve impulse
A rapid, transient, self-propagating change in electric potential across the membrane of an axon.
nervous system ...
Nerve impulse The increase in membrane potential and the changes in sodium and potassium conductances that result from alterations in the permeability of the axon membrane to those ions. Also called action potential.
Nerve impulses activate the release of NO from these cells.
The NO diffuses into the lantern cells and inhibits cellular respiration in the mitochondria (probably by blocking the action of cytochrome c oxidase) ...
AKA: nerve impulse
The signal that travels along the length of a nerve fiber and ends in the release of neurotransmitters. Nerve impulses are the means by which information is transmitted along the neuron and throughout the nervous system.
What is a nerve impulse? A nerve impulse, or an action potential, is a series of electrical responses that occur in the cell. (Fig. 2) With the appropriate stimulation, the voltage in the dendrite of the neuron will become somewhat less negative.
Hermann von Helmholtz, first to measure the velocity of nerve impulses; studied hearing and vision
Alan Hodgkin & Andrew Huxley, mathematical theory of how ion fluxes produce nerve impulses
Georg von Békésy, research on the human ear ...
Changed polarity of the membrane, the action potential, results in propagation of the nerve impulse along the membrane. An action potential is a temporary reversal of the electrical potential along the membrane for a few milliseconds.
Because "voltage-gated" channels underlie the nerve impulse and because "transmitter-gated" channels mediate conduction across the synapses, channels are especially prominent components of the nervous system.
Whether a receptor is a part of a neuron or in close contact with one, all convert the energy they receive into the electrical energy of the nerve impulse by depolarizing the connecting nerve cell's membrane.
Acetylcholine is released from the axon end of the nerve cell when a nerve impulse reaches the junction. A wave of electrical changes are produced in the muscle cell when the acetylcholine binds to receptors on its surface.
nerve cell A cell specialized to originate or transmit nerve impulses.
nerve cell body The largest part of a neuron that typically contains the nucleus.
nerve cord A long, compact bundle of nerve cells that is part of the central nervous system.
If the purpose of the cell is to transmit nerve impulses, there will be fewer mitochondria than in a muscle cell that needs loads of energy. If the cell feels it is not getting enough energy to survive, more mitochondria can be created.
myelinated nerve fibres in somatic nerves, measuring 1 to 22 um in diameter, conducting nerve impulses at a rate of 6 to 120 m/sec.
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axon
a typically long outgrowth, or process, from a neuron that carries nerve impulses away from the cell body toward target cells.
B
Bacillus
a bacterial cell that is rod-shaped (i.e. longer than it is wide).
Cells specialized to transmit electrical nerve impulses, to carry information from one part of the body to another ...
axon - long nerve cell processes that is capable of rapidly conducting nerve impulses over long distances so as to deliver signals to other cells ...
action of muscles 77 the individual muscle cannot always be treated as a single unit, since different parts of the same muscle may have entirely different actions, as with the Pectoralis major, the Deltoid, and the Trapezius where the nerve impulses ...
 See also: Cells, Action, Trans, Muscle, Organ
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