Question

Describe the normal pathway through the nervous system when a stimlus occurs . Be specific in listing each of the components

Answer 1

Three types of neuron arer required to transmit information via the stimulus response pathway.

a) Sensoty neurons which transmits information from the sensory receptors to thc central nervous system.

b) Relay neuron which transmit information within the Central nervous system.

c) Motor neurons which transmits information from the central nervous sustem to the effectors which could be muscles or glands.

Overview of the the pathway of nerve impulse

Stimuli --> Sensory receptors --> Sensory neuron -->Relay neuron --> Brain -->Motor neuron ---> Effector.

Stimulus, this is the first event, stimulus is the change in the enviornment that is detected by sensory receptors, eg, sound, physical contact, taste, visual sensation, pain, etc.

Sensory receptors which transforms enviornmental impulses into electrical nerve impulses.

Sensory neurons, that transmits sensory information from the receptors to CNS

Relay neuron which transmits within the CNS as descision making process

Motor neurons which transmits information fron CNS to the effectors.

Effectors, which include the muscle or gland, it is the effector which takes the action.