trace the path of a nerve impulse in case of a reflex action
Answers
Answer:
Most reflex arcs involve only three neurons. The stimulus, such as a needle stick, stimulates the pain receptors of the skin, which initiate an impulse in a sensory neuron. This travels to the spinal cord where it passes, by means of a synapse, to a connecting neuron called the relay neuron situated in the spinal cord.
Answer:
Electrical signals from sensory neurons are received by relay neurons, which are located in the spinal cord of the central nervous system (CNS). Relay neurons link sensory and motor neurons together. From a motor neuron, an effector gets electrical impulses. An effector causes a reaction (muscle contracts to move hand away).
Explanation:
Sensory neurons, often referred to as afferent neurons, are neurons in the nervous system that use their receptors to translate a particular kind of stimuli into action potentials or graded potentials.
Transduction of sensory information is the name of this process. The spinal cord's dorsal ganglia are home to the cell bodies of sensory neurons.
The afferent nerve fibres in a sensory nerve carry the sensory data from the eye to the brain via the spinal cord.
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