PSYCO275 Chapter Notes - Chapter 3: Franz Nissl, Pyramidal Cell, Temporal Lobe

• School: University of Alberta
• Department: Psychology
• Course: PSYCO275
• Professor: Deanna Singhal

Document Summary

Central nervous system (cns): located in skull (brain) and spine (spinal cord) Peripheral nervous system (pns): located outside skull and spine. Somatic nervous system (sns): interacts with external environment. Afferent nerves: carry sensory info. from skin, skeletal muscles, joints, and eyes to the. Efferent nerves: carry motor signals from cns to skeletal muscles. Autonomic nervous system (ans): regulates body"s internal temperature. Sympathetic nerves: motor nerves (efferent) that project from the cns in the lumbar (lower back) and thoracic (chest) regions. Stimulate, organize, and mobilize energy resources in threatening situation arousal. Synapse with long second neurons short preganglionic nerves & long postganglionic nerves. Decreases secretion of salivary gland, increases heart rate, constricts blood vessels, ejaculation, dilates pupil, stimulates secretion of sweat glands, dilates bronchioles, inhibits mucous secretion. Parasympathetic nerves: efferent nerves that project from brain and sacral (lower back) region of spinal cord. Synapse with short second neurons long preganglionic nerves & short postganglionic nerves.