KINESIOL 2Y03 Lecture Notes - Lecture 9: Saltatory Conduction, Chemical Synapse, Peristalsis
14 Dec 2019
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Types of propagation unmyleinated axons (3: unmyelinated axon, continuous conduction, ap occur at one spot on a membrane but have the ability to propagate by stimulating adjacent regions. Once it starts, it cannot be stopped. Types of propagation myelinated axons (5: myelinated axon, ap conducted from one node of ranvier to another, saltatory conduction: ap concentrated at the nodes of ranvier the voltage gated channels are focused in the nodes. It is much easier to open the voltage gated channels as they are bunched closer together: ap can jump across from one node to another very fast. Factors that affect propagation speed (7: within one neuron, you"ll have myelination or unmyelination, and you"ll always have the same speed in the length of the neuron. Can use temperature to compare two of the same neurons at different temperatures. Nerve fiber types (8: type a: large-diameter, myelinated.
