PHYS20008 Lecture Notes - Lecture 7: Depolarization, Afferent Nerve Fiber, Interneuron
27 Jul 2018
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* afferent neurons bringing signal into the brain receptors constantly monitoring the internal and external environment. * the brain receives, processes and integrates the signal and then generating an output. * efferent neurons 2 primary pathways: autonomic (sympathetic and parasympathetic) & somatic. *sensory neurons cell body in the middle meaning that the trigger zone where the action potential starts is(cid:374)"t at the (cid:272)ell (cid:271)ody (cid:894)like i(cid:374) the (cid:272)ase of the effere(cid:374)t (cid:374)euro(cid:374)(cid:895) * interneuron completely contained in the cns. * the receptor of the afferent is receiving information from the environment. The interneuron relays the signal to efferent neurons and the efferent neuron carries the signal out to something that will have an effect. Because a lot of things could be influencing the system at any one time, it depends on the environment/the influences. * the afferent neuron is excitatory so it releases an excitatory neurotransmitter (e. g. glutamate) onto the synapse and then onto the interneuron.
