Term
Nissl Bodies
what are they and where are they found? |
|
Definition
used for protein synthesis and transport in nuronal cell body.
conatin roughe er and free ribosomes and polyribosomes |
|
|
Term
Pre synaptic and post synaptic densities are what?
|
|
Definition
| pre and post synaptic membranes |
|
|
Term
| sensory neuron are what type of neuron? |
|
Definition
|
|
Term
|
Definition
similar to schwann cells.
make myelin
darkest staining
can wrape multiple axons several times.
Myelin = plasmalemma |
|
|
Term
|
Definition
| largest most plentiful cell in cns. contain Glial fibrillar acid protein GFAP |
|
|
Term
|
Definition
Astrocyte found in grey matter.
Have Pedicles
suck ions from blood vessels from the pedicle |
|
|
Term
|
Definition
| Found in white matter. suck ions from blood vessels via perivascular foot. |
|
|
Term
|
Definition
|
|
Term
|
Definition
CNS macrophages.
Bone marrow. |
|
|
Term
|
Definition
Low columnar or cuboidal cells which line ventrcle of central canal, brain and spinal cord.
contain cilia and microvilli to circulate fluid.
contain Na channels and create an osmo gradient |
|
|
Term
|
Definition
| Sort of protective barrier formed from astrocyte end feet |
|
|
Term
|
Definition
Auto Ab's to own oligodendrocytes. Demyelination in cns
F>M |
|
|
Term
|
Definition
| inner and outer lip of the concentric circles of myelin made by Schwann cells |
|
|
Term
| what covers schwann cells and nodes of ranvier? |
|
Definition
|
|
Term
|
Definition
| bubbles of cytoplasm in myelin sheath |
|
|
Term
| What 2 structures can be seen in the concentric myelin circles around peripheral neurons? |
|
Definition
Major Dense lines and
Intraperiod lines |
|
|
Term
| Describe conduction along an unmyelinated nerve fiber |
|
Definition
| single layer of axon means Na channels exist down the entire length -> continous conduction |
|
|
Term
multipolar neurons are what type?
|
|
Definition
|
|
Term
|
Definition
| cuboidal cells which cover cell body and provide insulation |
|
|
Term
| Neuronal Cell bodies and dendrites are found in what part of cns? |
|
Definition
|
|
Term
| myelinated nerve fibers are found where in cns? |
|
Definition
|
|
Term
| Cortex consists of what kind of matter? |
|
Definition
|
|
Term
where are veinous sinuses found?
|
|
Definition
|
|
Term
|
Definition
endothelial cells of the capillaries with their tight junctions
+ end feet of astrocytes |
|
|
Term
Cerebral Cortex has how many layers?
name the 3 important ones |
|
Definition
6
Molecular
Purkinje
Granule Cell Layer
White matter |
|
|
Term
| steps in regeneration of axon |
|
Definition
1) chromatolysis
2) anetrograde wallerian degeneration
3) regernation |
|
|
Term
|
Definition
| astrocytic scar formed by astrocytes repairing damaged neuron/ dead |
|
|
