The answers, respectively, are:
resting potential; action potential.
The correct answer to the question above is cytoskeleton. Microtubules, microfilaments, and intermediate filaments make up the cytoskeleton, which lies beneath the plasma membrane and provides support, movement, and shape for the cell. These structures definitely form cytoskeleton for the support and structure.
Answer:The respiratory system helps create sound that enables humans to communicate with each another.
Explanation: