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S & F Neurons and Glia
Terms in this set (34)
Dendrites are on the (transmitting or receiving) end?
Best theory right now about how we remember things long term is attributed to?
Where is the neural anatomy is this taking place?
LTP (long term potentiation)
Axons generally carry action potentials (toward or away) from the soma. An exception is
A severed PNS axon will grow back approximately how fast?
a milimeter a day
Will a severed CNS axon ever grow back?
How about a PNS?
Problems with axon transport of signals probably has something to do with the pathology of which disease?
Your nervous system stops working when you are deficient of which element?
When we talk about sensitivity of neurons, what are we really talking about
FREQUENCY aka increased firing rate of neurons
Cortex is all (white or grey) matter
Grey matter within white matter is where you're going to have ___________.
Multiple sclerosis is ____________ demyelination
Type of drug used for MS?
steroids (to suppress immune system)
For diffuse axonal injury caused by acceleration injury, how long do you have to wait to see the full effects of the damage?
2 weeks to a month
What drugs would be given to a pt with excitotoxicity?
mannitol sugar (osmotic to avoid swelling) and anitinflammitory drugs
Motor neurons are (uni or multi) directional?
All motor neurons begin where?
The soma of motor neurons are located where?
The dendrites in a sensory neuron are going to be located where?
The only type of axon that is "incoming" is on a ________ neuron
somas that are located in the PNS are called __________.
___________ modulate information between motor and sensory neurons. They are the "in between" and "decision makers"
Your brain is made of ____________. (which type of neuron)
Interneurons more closely resemble (which type of neurons) A difference between these two types of neurons is that interneurons never leave the ________.
Glutamate is in which food product?
All sensory comes in (dorsally or ventrally)
All motor come out (dorsally or ventrally)
one sensory, one motor reflex arc is called?
do you need a pt to be conscious for this to work?
A decreased response to a repeated stimulus is called ___________.
If there is severe injury to the neck or brain, and you test a reflex on a pt, it will be __________.
hypersensitive. (brain normally contributes some inhibition, brain is no longer sending those signals)
For Golgi tendon organs, it turns (on of off) the agonist, and turns (on or off) the antagonist
Twitching is caused by (too much or too little) muscle tone
__________ involves agonists and antagonists interrupting each other
Rigidity is __________ increased muscle tone
Which is worse prognosis for abnormal posturing?
A. pt with "flexors" arms up by their chest
B. pt with "extensors" arms down with fingers and palms curved dorsally
B. means lower spinal cord damage
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