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.
