ES 207 Lecture Notes - Lecture 1: Peripheral Nervous System, Axon Hillock, Sensory Neuron
6 Nov 2018
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The sensory division, or afferent division, of the pns conducts action potentials from sensory receptors to the cns: the neurons that transmit action potentials from the periphery to the cns are called sensory neurons. The motor division, or efferent division, of the pns conducts action potentials from the. Cns to effector organs, such as muscles and glands: the neurons that transmit action potentials from the cns toward the periphery are called motor neurons. Neurons (nerve cells): receive stimuli, conduct action potentials, and transmit signals to other neurons or effector organs: there are three parts to a neuron: a cell body and two types of processes, called dendrites and axons. Each neuron cell body contains a single nucleus. Axon: a single long cell process extending from the neuron cell body. Axon hillock: the area where the axon leaves the neuron cell body. Found in special sense organs, such as retina of the eye and nasal cavity.
