PSYC 2410 Lecture Notes - Lecture 2: Central Nervous System, Dura Mater, Pia Mater

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2410
• Professor: Elena Choleris

Document Summary

Psyc*2410-notes for lecture 2 and chapter 3-anatomy of the nervous system. Central nervous system (cns): brain and spinal cord. Autonomic nervous system (ans): interacts with internal environment. Afferent nerves: carry sensory signals from internal organs to the cns. Efferent nerves: carry motor signals from the cns to internal organs. Sympathetic nerves/system: autonomic motor nerves that project from the. Cns in the lumbar and thoracic regions of the spinal cord: functions: stimulates, organizes, mobilizes energy. Stress and arousal: example: in response to an acute stressful situation the sympathetic system stimulates the heart and sweat glands=decrease salivary glands secretions (dry mouth). Parasympathetic nerves/system: autonomic motor nerves that project from the brain and sacral region of the spinal cord. Sympathetic changes are indicative of psychological arousal, whereas parasympathetic changes are indicative of psychological relaxation. Occulomotor: motor, some sensory- eyelid movement and pupil constriction. Trochlear: motor, some sensory- superior oblique eye muscle (roll your eyes)