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39 Cards in this Set

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Functional classification of nervous system?
- Sensory
- Motor
- Interneurons
- Excitatory
- Inhibitory
Chemical classification of nervous system?
- Cholinergic
- Monoaminergic
- Peptidergic
Neurotransmitter in cholinergic neurons?
Acetylcholine
Neurotransmitter of monoaminergic neurons?
Adrenalin
Dopamin
Neurotransmitter of peptidergic neurons?
Peptides
Morphological classification of nervous system?
According to either:
- Perikaryon
- Processes
Morph. class. according to perikaryon?
- Pyramidal
- Fusiform
- Stellate
- Basket
Morph. class. according to process shape & type+
1. Heteropolar & isopolar
2. Apolar & unipolar
Apolar neuron: Example
Organ of corti hair cell
Which neuron is the start of development?
Apolar neuron
Example of apolar neuron?
Taste buds
How does apolar neuron spread signal?
via dendrite of another neuron
Example of anaxonic neuron?
Retinal amacrine cells
Example of unipolar neuron?
Primary sensory cells:
- Rods
- Cones
How is a bipolar neuron?
2 processes: Axon & dendrite
Example of bipolar neuron?
- Retinal
- Olfactory
- Cochlear & vestibular ganglion
Example of pseudopolar neuron?
Craniospinal sensory ggl.
Draw following neurons:
1. Apolar
2. Anaxonic
3. Unipolar
4. Bipolar
5. Pseudounipolar
6. Multipolar
Nice :)
Where do we find multipolar neurons?
- Brain cortex
- Spinal motor nerves
- Pyramidal cells
- Purkinje cells
Number of processes of multipolar neurons?
Many
Multipolar neuron: where is Nissl substance?
Perikaryon
What is Nissl´s substance?
Highly developed rER + ribosomes
What does Nissl´s substance?
Synthesize
Multipolar neuron: perikaryon consist of?
Nissls substance
Ga
Lysosomes
Mitochondria
Multipolar neuron: Where is there NO NIssl´s substance?
Axon hillock
Multipolar neuron: Where is there no GA?
Dendrites
Multipolar neuron: What are collateral branches?
Axon branches going back to its own cell
Multipolar neuron: axons contain?
- Mitochondria
- Microtubules
- Neurofilaments
- sER cisterns
How does axons maintain itself?
Cannot maintain itself, has no rER. Dependent on cell body
What is anterograde transport?
Transport from perikaryon to synaptic terminals of axon
What goes fast stream in anterograde transport?
Vesicles
What goes medium speed in anterograde transport?
Mitochondria
What goes slow speed in anterograde transport?
Proteins and microfilaments
What is retrograde transport?
Transport from terminal axon butouns to perykaryon
What is transported retrogadelly?
Viruses / toxins
What do we find in neuronal cytoplasm?
- Nissl´s substance
- rER - ergastoplasm
- GA
- Lipofuschin
- All the normal shit
- Neurofibril bundles (for mechanical resistance)
What is the neuropil?
Extensions of glial & neuronal cells - part of grey matter
Metabolic activity of neuropil?
High
Most voulnerable part of nervous tissue?
Neuropil