Nervous system Flashcards
1
Q
Advantage of saltatory conduction
A
AP travels faster with the same number of “Steps”
2
Q
Grey matter
A
unmyelinated axon neurons, processes stimuli
3
Q
White matter
A
myelinated axon neurons, communicates between grey matter and body
4
Q
sensory neurons, motor neurons, interneurons
A
afferent, efferent, association
5
Q
dominant ns cell type
A
neuroglia
6
Q
astrocytes
A
CNS, form synapses, regulate neuron metabolism, reuptake, blood-brain barrier
7
Q
satellite cells
A
PNS, “manage and support” pns
8
Q
oligodendrocytes
A
CNS, form myelin sheaths
9
Q
Schwann cells
A
PNS, form myelin sheaths
10
Q
Microglia
A
immune cells
11
Q
saltatory conduction is
A
myelin causes AP to diffuse over it, causing it to “jump” over nodes of ranvier
12
Q
what can muscle/neurons do that other cells can’t
A
briefly switch polarity of their membranes
