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5 Cards in this Set
- Front
- Back
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1) When we say neural connections are specific, what do we mean?
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The fact that nervous systems in complex multicellular animals partition into many separate streams:
motor, sensory autonomic, enteric. |
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2) List three phases of decision making for an axon and give an example of each.
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a.Pathway selection – ipsilateral or contralateral
b.target selection – lateral geniculate or medial geniculate c. address selection – which specific layer of the lateral geniculate. |
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3. What is a growth cone?
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The tip of a growing axon is the growth cone. It is a very specialized structure that guides the axon to its target.
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4) List three effects that guidance cues can have on a growth cone.
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Permissive, attractive, repulsive
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5) List four general sites where axonal guidance cues originate.
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Substrate, other axons, guidepost cells along the desired path, and the target
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