Part C Flashcards
1
Q
Nerve Fiber Classification
A
- Diameter
- Degree of myelination
- Speed of conduction
2
Q
Synapses
A
A junction that mediates information transfer from one neuron
3
Q
Presynaptic neuron
A
conducts impulses toward the synapse
4
Q
Postsynaptic neuron
A
transmits impulses away from the synapse
5
Q
Types of Synapses
A
- Axodendritic
- Axosomatic
- Axoaxonic (axon to axon)
- Dendrodendritic (dendrite to dendrite)
- Dendrosomatic (dendrites to soma)
6
Q
Electrical Synapses
A
Are less common than chemical synapses
7
Q
Chemical Synapses
A
Specialized for the release and reception of neurotransmitters
8
Q
Neurotransmitters
A
Chemicals used for neuronal communication with the body and the brain
9
Q
Chemical Neurotransmitters
A
Acetylcholine (ACh)
Biogenic amines
Amino acids
Peptides
Novel messengers:
ATP and dissolved gases NO and CO
10
Q
Neurotransmitters: Amino Acids
A
Found only in the CNS
Include :
GABA -gramma(y)-aminobutyric acid
11
Q
ATP
A
- Is found in both the CNS and PNS
* Provokes pain sensation
12
Q
N-CAM
A
nerve cell adhesion molecule
