Explain how endorphins relieve pain, describing the receptors and the pathway from the periaqueductal

gray; include how we determine whether pain relief is endorphin based.


. Walking barefoot, you step on a sharp rock. You reflexively withdraw your foot, plant it firmly on the

ground again, and regain your posture. Describe these behaviors in terms of the sensory/pain mechanisms

and reflexes involved.


. Trace the progress of a movement through the parietal and frontal lobes, giving the names of the

structures and a general idea of the processing occurring in each.


. Compare the symptoms, causes, and treatment options for Parkinson’s and Huntington’s diseases.