PSYC 3170 Chapter Notes - Chapter 2: Sympathetic Nervous System, Cerebral Cortex, Basal Ganglia
27 Jan 2019
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Document Summary
The nervous, endocrine, cardiovascular and immune systems are all affected by etiology/health correlates, and they all also contribute to stress response. Pns is made of somatic (voluntary) and autonomic systems. Autonomic system consists of sympathetic (fight/flight) and parasympathetic (rest/digest) systems. Receives afferent (sensory) impulses and sends efferent (motor) impulses: hindbrain: medulla receives info about heart rate and modifies it as required, also receives info about bp and co2/o2 levels for regulating vessel constriction and breathing rate. Hypothalamus: helps regulate the medulla which controls cardiac functioning, bp and respiration. Also is transition point between thoughts generated in the cortex and their impact on organs (ex. being embarrassed blushing). Telencephalon two hemispheres of cerebral cortex: higher order functions. Interprets sensory info and puts out motor impulses, four lobes = parietal, temporal, frontal and occipital. Limbic system: borders the midline of brain is involved in stress/emotional responses. Amygdala = involved in threat detection, hippocampus = involved in emotionally charged memories.
