BISC306 Lecture Notes - Lecture 8: Ligand-Gated Ion Channel, Myocyte, Motor Neuron

• School: University of Delaware
• Department: Biological Sciences
• Course: BISC306
• Professor: Cain William

Document Summary

Types of synapses & transmitting information: synaptic transmission of information=2 major types, electrical synapse a. i. Uses gap junctions to propagate message from one cell to the other a. iii. Relatively rare in neurons but not in cardiac and smooth muscle a. vi. Positive change vs. negative change in voltage: chemical synapse b. i. Neurotransmitter-chemical compound that sends signals to cells to create responses b. iv. 1. b. iv. 2. Not bidirectional; one presynaptic cell one postsynaptic cell; rectified b. v. May depolarize, hyperpolarize, or modify post synaptic cell b. vii. 2 types of transmission: b. vii. 1. neurotransmitter release is essentially the same, both utilize voltage-gated calcium channels b. vii. 2. Presynaptic neuron may release more than 1 neurotransmitter b. viii. 3. A synapse may support both ionotropic & metabotropic transmission b. viii. 4. Axons can make synapses on dendrites, cell bodies, and axons of other neurons b. viii. 4. a. Dendrite on dendrite; axon on cell body; cell body on dendrite b. viii. 4. b.