Explain how a nervous signal originates and then is transferred from the stimulus to the receiving...

Explain how a nervous signal originates and then is transferred from the stimulus to the receiving cell.

Expert Solution

The nervous system is a complex collection of nerves and specialized cells known as neurons.The neuron is the functional unit of the nervous system.All neurons have three parts.Dendrites,aell body and Axon.In axons some axons are wrapped in a myelin sheath formed from the plasme membrane of specialized glial cells known a s schwann cells.The gap between schwann cells is known as the node of Ranvier and serves as points along the neuron for generating a signal.When theses signals reach the end of a neuron,they stimulate the release of chemicals calied neurotransmitters.Neurotransmitters travel acrossthe synapses,spaces between neurons or between neurons and other body tissues and cells.

gladiator answered 2 years ago

explain how a light stimulus falling on the retina is transduced into a neural signal and...

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