This preview shows page 1. Sign up to view the full content.
Unformatted text preview: neurons to another cell (neuron, muscle cell, glandular cell, target cell) Chemical vs. Electrical Synapse Synapse: where neural communication occurs Electrical Synapse Electrical signal flows from the cytoplasm of one cell to the cytoplasm of the adjacent cell through gap junctions Advantage FAST! Able to stimulate many cells at the same time Chemical Synapse Chemical signal from a presynaptic neuron to a postsynaptic cell across a synaptic cleft (space in between) Chemicals Neurotransmitter (neuron, muscle, gland) Neurohormone (goes into the blood) Figure 8-2 Chemicals are stored in vesicles in the axon terminals Released by exocytosis into synaptic cleft (dependent on impulse dependent opening of Ca2+ channels) Diffusion across synaptic cleft Bind to receptors on the postsynaptic membrane (Note mitochondria in axon terminals) Figure 8-20 Figure 8-21 - Overview Table 8-4 (1 of 2) Table 8-4 (2 of 2)...
View Full Document
This note was uploaded on 04/29/2009 for the course BIOL 425 taught by Professor Tondi during the Fall '08 term at George Mason.
- Fall '08