1) Emma has multiple sclerosis. If you could view her nervoussystem you would find
a lack of neurotransmittersin some neurons
areas where the myelin sheathhas degenerated
areas where the dendrites areseverely damaged
a reduction in the number ofchloride ions in her peripheral nervous system
2) Leonard's mother became dehydrated during a recent illness, andthe levels of sodium in her body were significantly reduced. Ifenough sodium was lost you might expect that
her nervous system wouldbecome highly activated and action potentials would begenerated continuously
fewer action potentials wouldoccur in her nervous system
more neurotransmitters wouldbe produced in her terminal buttons
glial cells would start todegenerate and die
3) If inhibitory postsynaptic potentials did not exist
it would be "easier" for aneuron to fire its action potential
it would be "harder" for aneuron to fire its action potential
there would not be any effecton the ease at which a neuron fires its action potential
it would be impossible forneural impulses to travel across the synapse
4) When nicotine acts on the brain it acts like acetylcholine andbinds to ACh receptor sites causing postsynaptic potentials.Nicotine is
an antagonist
an agonist
a monoamine
a reuptake agent
5) Monoamines have been associated with all of the following except
aggressive behavior
pain reduction
schizophrenia
depression
6) A good analogy for the way in which a neurotransmitter binds toreceptor sites is
the opening and closing of awindow
a key fitting in the lock ofa door
the lowering of adrawbridge
the pulling of the trigger ofa gun