Nerve conduction - Synapse Flashcards
Presynaptic
conduct impulses toward the synapse
Postsynaptic
transmitting the electrical signal away from the synapse - does not create AP
Transmitter substances attach to what?
A binding site on the postsynaptic membrane - lock and key. TS will only attach to bindingsites specific for it. It will accept and be activated only by a TS that it is specific for and is specific for it.
What is the name for any substance that attaches to a binding site?
Ligan (poison, drugs, etc.)
What is synapse?
a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.
Where can synapses occur?
- Dendrites - axodendritic
- Soma - axosomatic
- Axon - axoaxonic
What is the primary structures of synapse?
- presynaptic membrane
- postsynaptic membrane
- synaptic cleft
What are in terminal buttons?
Synaptic vesicles
Tell me about synaptic vesicles
- small sv contain neurotransmitter
- are produced in the soma and transported to button by microtubules or recycled in the button