KINE 3670 Lecture Notes - Lecture 8: Electric Current, Astrocyte, Voltage-Dependent Calcium Channel
24 Dec 2015
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Document Summary
Electrical current flow through gap junctions, atp and other molecules can also go through these junctions. Chemical we get pre and post synaptic transmission and synapse. Appear before the chemical synapse persist post-nataly and into adulthood. Deal with very basic functions like breathing. They have cytoplasmic continuity can flow through passively. These are larger than ion channels allow larger molecules like atp to pass through. Bidirectional allow flow in both directions, but generally there is one preferred direction. There is a tiny delay but it is insignificant very fast. Signal is transferred form pre to post synaptic neuron in about . 1 ms. This is why it"s so important in reflexes so fast. Big difference there is a space between the two neurons called the synaptic. Neurotransmitters bind to post synaptic neuron and this enables secondary cleft effects. Calcium is important trigger for fusion and release of nt vesicles.
