Action potentials are normally carried in only one direction: from the axon hillock toward the axon terminals. If you experimentally depolarize the middle of the axon to threshold, using an electronic probe, then _____
A) no action potential will be initiated
B) an action potential will be initiated and proceed only in the normal direction toward the axon terminal
C) an action potential will be initiated and proceed only back toward the axon hillock
D) two action potentials will be initiated, one going toward the axon terminal and one going back toward the hillock
D
You might also like to view...
Recall that light can be emitted from an atom when the atom loses energy. Which of the following processes is responsible for this production of light?
a. An electron moves closer to the nucleus of the atom. b. An electron moves farther away from the nucleus of the atom. c. An electron orbits the atom. d. A proton is released from the nucleus of the atom. e. The proton comes into close contact with a neutron of another atom.
A hormone that can lower blood levels of glucose is
a. glucagon
b. oxytocin
c. thymosin
d. calcitonin
e. insulin
Over the course of their evolutionary histories, the timing of flowering, the spacing of plants, and the nectar rewards of flowering plants have influenced the foraging behavior of bees, which in turn has influenced the morphology of flowers
This process is an example of A) competitive exclusion. B) convergent evolution. C) adaptive radiation. D) niche partitioning. E) coevolution.
Blood clots are formed by platelets and the plasma protein
A) thrombus. B) fibrin. C) erythropoietin. D) fibrinogen.