Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
what r neuron consist of?
|
-perikaryon
-axon -dendrite |
|
|
what r components of axon?
|
-axolemma
-axoplasm -telodendria at the end -bouton (bedd-like endings) -collateral branching |
|
|
what r types of macroglia?
|
-astrocyte
-oligodendrocyte |
|
|
what r types of oligodendrocyte?
|
-infrafasicular (in myelinated tracts)
-perineuronal (intact with neuronal surface) |
|
|
function of oligodendrocyte?
|
-form and maintain the myelin sheath in CNS.
|
|
|
what r types of astrocyte?
|
-protoplasmic (starlike in grey matter)
-fibrous (asymmetrical process, many in white fibers) |
|
|
where r the common site of astrocyte?
|
platelike end foot on:
-neuron -ependyma -pia mater -blood vessels |
|
|
function of astrocyte?
|
act as
-connection -insulator -framework |
|
|
what r pigment granules in neuron?
|
-melanin (high in substantia nigra)
-copper (high in locus coerulus) -lipofuscin (high in ageing neuron) |
|
|
what is ChrOmaToLySis?
|
-injury in perikaryon.
-dispersion of Nissl body -loss of affinity for stain with Nissl teknik. |
|
|
how is position of nucleus in chromatolysis?
|
nucleus away from hillock & relocated peripherally.
|
|
|
what is Schmidt-Lanterman?
|
-a cleft downward from myelin surface.
-conduction channel for metabolites into interior part of sheath. |
|
|
what is Schmidt-Lanterman segment?
|
segment of myelin divided by the S-L cleft.
|
