The velocity of nerve impulse conduction is greatest ina. heavily myelinated, large-diameter fibers,b. myelinated, small-diameter fibers,c. nonmyelinated, small-diameter fibers,d. nonmyelinated, large-diameter fibers.

Mark the following statements as true or false. If a statement if false, correct it to make a true statement.

b. Postsynaptic potentials may summate by spatial summation in which multiple neurons fire onto a single postsynaptic neuron.

Mark the following statements as true or false. If a statement if false, correct it to make a true statement.

c. An inhibitory postsynaptic potential causes the membrane potential of the postsynaptic neuron to approach threshold.

Mark the following statements as true or false. If a statement if false, correct it to make a true statement.

d. Spatial summation can combine two EPSPs, two IPSPs, or an EPSP and an IPSP.

Explain how an action potential is propagated down an axon in continuous conduction. Why is saltatory conduction faster than continuous conduction?

In unmyelinated axons, action potentials are propagated by_________ conduction.