What produces myelin in the PNS
Schwann cells
With an injury to the CNS what occurs
Inflammation
Astrocyte proliferation
Scar formation
Microglia cell recruitment
A 36 year old woman comes yo your office because she has experiencing clumsiness and incoordination in her hands and feet. She also tells you that she has been having problems with her peripheral vision. You should suspect what?
Multiple sclerosis
What of the following is an autoimmune disease of the neuromuscular junction
Myasthenia gravis
Your patient presents with ptosis,facial muscle weakness, dysphasia and dysphasia you should expect a problem with the…
Nicotine acetylcholine receptors
What are the symptoms of an upper motor lesion
Spasticity
Hypertonic muscles
Muscular atrophy
A person is admitted to the emergency room due to cardiac arrest. The er doctor will inject what into the heart to try and stimulate a contraction
Atropine
Most responsible for resting membrane potential
Non gated channels
During absolute refractory period an action potential
Will not happen since Na gates are locked
What signal does presynaptic membrane of a neuron generate
Action potential
Release from neurotransmitters from the presynaptic membrane depends on what and occurs by what mechanism
Ca influx exocytosis
What type of change occurs in the alpha motor neuron cell body when an injury to a lower motor neurons
Chromatolyic defenration
All of the following neurotransmitters are usually excitatory except
- glutmate
- GABA
- dopamine
- no change
GABA
Most sensory neurons are what type
Psuedounipolar
Axon many dentrites
Multipolar
Cerebral spinal fluid is found between what two layers
Pia mater and arachnoid matter
True or false: dendrites have myelin sheath
False
True or false: amount of neurotransmitters released is based on concentration of K ions
False
What is also known as pachymenix
Dura mater
Subarachnoid space is between what menigies
Pia and arachnoid
Which glia help produce cerebrospinal fluid
Choridal cells
What neurotransmitter is the most abundant excitory neurotransmitter
Glutamate
