Synapses and Neurotransmitters Flashcards
1
Q
What are the 4 structural classifications of neurons?
A
- anaxonic
- bipolar
- unipolar
- multipolar
2
Q
What are dendrites?
A
- highly branched information received from other neurons via dendritic spines
3
Q
What are axons?
A
- long slender structure which propagates an electrical impulse known as the action potential
4
Q
What is a telodendria?
A
- at the end of an axon - series of fine extensions
5
Q
Where is synaptic terminals?
A
- at the end of each of the telodendria
6
Q
What is a synapse?
A
- where these synaptic terminals end, there is a structure.
7
Q
What is the structure of neurons?
A
The synapse
- presynaptic cell
- postsynaptic cell
- the synaptic cleft
8
Q
What is the postsynaptic cell?
A
- specialised site at which neuron communicates with another cell
- another neutron, a muscle fibre, a gland cell, a fat cell
9
Q
There are two types of synapses.
A
- electrical synapse
- chemical synapse
10
Q
What is a chemical synapse?
A
- found in most synapses between neurons and synapses between neutrons and other cells
- cells not in direct contact
11
Q
What is a synaptic knob?
A
- expanded area of axon of presynaptic neuron
12
Q
What does a synaptic knob contain?
A
- synaptic vesicles of neurotransmitters
