"Dual innervation" refers to an organ receiving .

If the nervous system finds a particular pathway is inaccessible, it will:     Continue to use that pathway to send messages to and from other parts of the body.     Try to find or create a new pathway to send the signal to or from other parts of the body.     Use the muscles to send a signal without the use of the nervous system.     None of the above.

Steven had a stroke resulting in his having difficulty speaking. Ruth suffered a severe nerve injury to her left arm while working, but after a few weeks regained full use of her arm. Why is Steven having difficulty regaining his speaking ability; whereas, Ruth has regained full function in her arm. Base your answer on nervous system regeneration and repair.  Please respond with 1-2 paragraphs.  (Hint: Section 12.10) Even though both injuries are nervous system injuries. There is a major difference between these two injuries: Central Nervous System versus Peripheral Nervous System!

is it possible for a second action potential to start during the refractory period?   short answer plz