SCARTELLI PSYCH NOTES 09 26 Neuron Communication Chemical substance CAN affect Agonists Ex Black widow venom Antagonists Block or reduce response to NT Ex Beta blockers Mimic or enhance effect of neurotransmitters NT Too much dopamine illogical thinking patterns NT s taken back into sending cell most common mill sec Reuptake Diffusion Drift away Enzyme A protein made by cells Breaks down NT even faster used for ACH Central Nervous System CNS Brain AND spinal cord Spinal Cord Bundle of neurons Carries message between body and brain Responsible for very fast life saving The peripheral Nervous System All nerves AND neurons not in CNS Somatic Nervous System VOLUNTARY Carries sensory info Anticipatory Anxiety Activates SYMD Body can stay in crisis mode Controls skeletal musicals in crisis models Sensory Pathway Sensory neurons Motor Pathway Motor neurons AKA afferent from senses to CNS No energy contributes constant state of distress No healing AKA afferent from CNS to voluntary muscles Controls INVOLUNTARY muscles organs glands Sympathetic Division What sets activation in regards to crisis Reacting to stressful events Direct resources to short term survival Called Fight or Flight Fight face it Flight outrun threat Parasymphetic Division Restores body to normal function Heal Grow Health issues if not enough too much stress Can elicit BREATHING exercise mediation yoga Don t eat food while watching news It s stressful and you don t receive all the nutrients from meal People get sick if this doesn t happen How to Study the Brain See what happens when we lose it See Blackboard Learn for chart Life sustaining functions breath swallow heart rate Dysfunctions of this leads to death or life support Medulla Pons Plays role in sleep dreaming Left right body coordination and arousal Dysfunction coma The Brain Stem Cerebellum Controls coordinates involuntary rapid fine motor movement Dysfunction problems w automatic motor behavior balance Group of brain structures involved in learning emotion memory motivation Cortex Structures under the cortex Thalamus Hypothalamus Reticular Formation Plays role in general arousal Relays sensory info from lower brain to proper area of cortex Motivational behavior such as sleep hunger thirst sex homeostasis Limbic System Hippocampus Amygdala Formation of long term memories storage of memory for locale of objects Fear responses memory of fear other emotions too
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