Nervous System Review

ALS

Atrophy of voluntary motor neurons; inherited and noninherited forms

Astrocytes

Connect blood vessels to neurons

Parkinson's disease

Deficiency of neurotransmitter dopamine in particular parts of the brain

Schwann

Form the insulating myelin sheath around the neurons in the PNS

Ependymal

Forms membranes around tissue

Diameter of axon

Has impact on speed of impulse

Microglial Cells

Immune function, digest debris, kills bacteria

Myelin sheath does what

Insulates axon like coating on a wire

Dendryte

Part of nerve cell where impulse enters the neuron

Axon

Part of nerve cell where impulse exits the neuron

Other name for ALS

Lou Gehrig's disease

Oligodendrocytes

Make myelin sheath that provides insulation around the axons

Intraneuron

Neurons that connects/runs between neurons

MS

Progressive demyelinization in CNS

Oligodendrocytes and schwann

Same function; works in CNS; works in PNS

Larger diameter of the wxon

The faster the impulse travels