d da db dc dd de df dg dh di dj dk dl dm dn do dp dr ds dt du dw dx dy dz

Перевод: dendrite

дендрит

Тезаурус:

1. How effective any given synapse is at influencing the postsynaptic neuron in firing depends on a number of factors - how close it is to the cell body, whether it is on the shaft of a dendrite or on one of the many spines, and so forth.
2. The effect that this current has on the rest of the dendrite, and hence in due course the cell body, depends very much on the geometry of the region around the synapse; biophysical calculations show that spine synapses are more effective than shaft synapses in spreading the current, and in any given spine, the current flow is dependent on its exact shape.
3. These stimulate (or inhibit) the dendrite on the other side of the synapse.
4. There the neurotransmitters cause a change in the membrane potential of the dendrite of the postsynaptic cell, thus creating an electrical signal.
5. The three properties can be explained on the assumption that a synapse will be potentiated if, and only if, it is active at a time when the region of dendrite on which it terminates is sufficiently depolarized.
6. Pathological dendrite formation in neurons of the substantia nigra has been found in brains of infants who died of SIDS and also in infants with intrauterine growth retardation.
7. The signal is transferred across the synapse between the axon of one cell and the dendrite of another by neurotransmitters.
8. Neurones connect with one another via "synapses", where an end branch of an axon comes into contact with a cell body or dendrite of another neurone.
9. In particular, the sensory neurons make both direct and indirect connections with the motor neurons; the direct connections involve synapses between an axon of a sensory neuron and a dendrite or cell body of the motor neuron (this is known as a monosynaptic pathway); in the indirect polysynaptic pathway the sensory neuron first makes synaptic contact with an interneuron, which itself then synapses with the motor neuron.
10. If the signal is the former a wave of depolarisation in the membrane of the postsynaptic nerve cell's dendrite begins to move towards its cell body, or stoma.
11. He then selected a particular class of neurons, recognizable by their long axons, measured the length of each dendritic branch and counted the spines on each, which lie then calculated as number of spines per m - that is, millionth of a metre - of dendrite.