The nerve conduction study showed no evidence of abnormal ac…

The nerve conduction study showed no evidence of abnormal action potentials in Kevin’s arm or leg. It also indicated there was no evidence of any demyelinating disease like MS. Kevin was becoming frustrated but his doctor continued to order tests. He now suspected that Kevin had developed Parkinson’s disease, a disorder of one of the basal nuclei of the brain that controls involuntary movement, the substantia nigra. The substantia nigra is associated with releasing dopamine, an inhibitory neurotransmitter. In order to test for this, the doctor ordered another brain scan, this time with iodine dye, to see the if the substantia nigra was the appropriate size.   The substantia nigra is composed of grey matter. What type of neurons (motor, sensory, or inter) would be found in the substantia nigra and why did you choose that answer? 

In hopes of reducing their stress, a college student begins…

In hopes of reducing their stress, a college student begins to practice guided meditation. During meditation they are directed to use the 4-7-8 controlled breathing method. The student notices that after using this technique they have lowered heart rate, reduced respirations, and are generally calmer. This method activated their _____________ nervous system.