Exam 2: Communication Within the Nervous System

After Debbie's car accident,as the doctor asked her if it hurt here or if it hurt when he pressed this hard,Debbie understood why she could tell the differences in amount of pressure the doctor used;her sensory neurons coded the different pressures via:

The fact that the cell membrane is highly permeable to some substances and much less so to other substances is one variable underlying the cell being ___.

The activity of excitatory synapses can be canceled by activity in inhibitory synapses.

When it is said that the cell membrane has a difference in electrical charge between its inside and the outside,this means the membrane is:

Acetylcholine ceases to stimulate the post-synaptic cell by:

___ tend to exit a neuron based on weaker electrostatic pressure than their force of diffusion.

Which statement characterizes the relative refractory period?

As the snake that bit him slithered away,Captain Jones remembered that a poisonous species could kill by blocking either his ___ or his ___.

Tetrodotoxin is a deadly poison because it blocks:

When an action potential reaches an axon terminal,___ enters the cell and triggers the release of neurotransmitter.

Most local anesthetics work by ___;some general anesthetics have the effect of ___.

The rate at which a neuron fires depends on the number of:

If the resting potential changed from -70 mV to -90 mV this would be termed a(n)___;this would occur as part of an ___.

The sodium-potassium pump forces sodium ions ___ the cell and potassium ions___ the cell.

Which statement characterizes the absolute refractory period?

All of the following are functions of glial cells except:

Compare and contrast EPSPs and IPSPs.How do EPSPs become an action potential?

The neurotransmitter docks with a receptor site and:

The effect of myelination on an axon's conduction speed is the equivalent of increasing an axon's diameter by:

The speed of neural conduction is most similar to the speed of: