Exam 8: Neurons: Cellular and Network Properties

In spatial summation the same stimulus is repeated until a threshold level of depolarization is reached.

If potassium channels in a neuron were blocked, would it be possible to produce an action potential? If so, describe the probable appearance of these components of a graph: threshold, rising phase, peak, falling phase, undershoot.If not, explain.

What does the Goldman-Hodgkin-Katz equation take into account that the Nernst equation does NOT?

Compare and contrast the EPSP, IPSP, and action potential as to ions involved, all-or-none law application, specific cellular locations, and specific cell types involved.

Branches that sometimes occur along the length of an axon are called

Autonomic motor neurons are subdivided into the

Ion concentrations are first significantly affected after ________ action potential(s).

Dr.Zoydburger has discovered a toxin produced in the venom of a poisonous marine invertebrate.Tests on lab mammals indicate that this toxin prevents sodium channel inactivation.How would this affect the action potentials produced in the neurons of a poisoned mammal?

Excitatory neurotransmitters of the CNS usually act by opening ________ channels.