The parasympathetic nervous system influences digestion bya. relaxing smooth muscle,b. stimulating peristalsis and secretory activity,c. constricting sphincters,d. none of these.

Using 20 or fewer words, define each of the following terms in your own words.

a. Sympathetic nervous system

You are running a race to the top of a mountain. Explain all the changes your sympathetic nervous system will initiate to maintain homeostasis as you run the race.

Mr. Chevalier has been diagnosed with Horner syndrome, which is caused by dysfunction of the sympathetic neurons in the superior cervical ganglion that innervate structures of the head, face, and neck. What symptoms is Mr. Chevalier likely to face due to his disease? Explain.

Common findings in heart failure are fluid retention by the kidneys and stimulation of the heart by the sympathetic nervous system. How would both of these findings help the body to compensate for the failing heart?