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psych
BIology of the mind/psych
Question | Answer |
---|---|
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. |