What ensures the one-way direction of an action potential?

A. Conduction of an action potential is an all-or-none event.
B. An axon can conduct a volley of action potentials very quickly.
C. Action potentials are self-propagating.  
D. An action potential at one node causes an action potential at the next node.
E. As soon as the action potential has passed by, that portion of the axon undergoes a short refractory period.


Answer: E

Biology & Microbiology

You might also like to view...

Which of the following is true of innate behaviors? Innate behaviors _____

A) are only weakly influenced by genes B) occur in invertebrates and some vertebrates but not mammals C) are limited to invertebrate animals D) are expressed in most individuals in a population

Biology & Microbiology

Which enzyme is a topoisomerase?

A. DNA polymerase I B. DNA polymerase III C. DNA gyrase D. DNA ligase

Biology & Microbiology

Chromosomes of a pair of homologous chromosomes

may differ from other chromosomes in terms of a. size. b. shape. c. the alleles they carry. d. the position of the centromere. e. all of these.

Biology & Microbiology

Discuss how environmental factors can have a negative impact on the development of a fetus. What will be an ideal response?

Biology & Microbiology