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BIology of the mind/psych

Neuron parts and functions Cell body:Life support center, Dendrites:branching at the cell body receive msgs from other neurons. Axon:covered with myelin sheath-speed up msgs through neurons. Terminal Branches: branched edges of the axon transmit msgs to other neurons.
Action potiential Neural impulse, electrical charge that travels down an axon. generated by + charged atoms
Threshold Each neuron recieves excitatory and inhibitory signals from neurons, when the excitatory exceeds a minimun intensity the neuron fires and action potiential.
Synapse junction b/w axon tip and dendrite, this gap is called a synaptic gap.
Neurotransmitter chemicals released from sending neurons across the synapse and bond to receptors sites on the receiveing neuron.
Reuptake neurotrnsmitters in the synapse that are reabosrbed into the sending neuron.
Serotonin involved with mood regulation, associated with depression.
Dopamine involved in diseases such as schizophrenia and parkinso's
Parts of the brain stem (old brain) Medulla,thalamus, and reticular formation.
Cerebellum litte brain, cooridnates voluntary m.m and balance.
Limbic system fear aggression and drives for food and sex. Includes hippocampus, amygdala and hypothalamus.
medulla controls breathing and heartbeat
thalamus sensory switchboards. directs msgs to the sensory areas in the cortex transmits replies to cerebellum and muedulla
reticular formation controlling arousal
amygdala fear and aggression
hypothalamus directs eating, drinking, body temp, controls emotions. goverens the pitituary gland
Brocas area impared speaking/ located in the motor cortex
Wernickes area impared understanding of speech.
Left brain/ right brian Left Brain: logic, language, science and math Right Brain: Holistic thought, intuition, creativity art and music
Thyroid vs parathyroid gland Thyroid: affects metabolism Parathyroid: regulates Ca+ in the blood
Adranal gland consists of adrenal medulla and cortex. stimulates fight or flight.
Created by: 718373596