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33 Cards in this Set
- Front
- Back
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Medulla Oblongata
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Vital Centre-controls heart rate and breathing
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Name the Brain Stem Structures
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Medulla, Pons, Cerebellum
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Pons-Location?
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Front of brainstem, above Medulla
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Pons-Function?
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facial expression
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Cerebellum-Function?
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smooth motor movements
Receives info from Motor Cortex Makes sure that body parts are in the proper location. |
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What is the RAS?
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Reticular Activating System
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RAS-Location?
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Runs through brain stem
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RAS-Function?
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Attention
Arousing brain from sleep Monitors Sensory Information |
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Hans Eysenck believed..
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that RAS is involved in the distinction between introversion-extroversion...
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Introverts....
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have overactive RAS, thus overactive cortex.. introvert thus reduces external stimulation to compensate
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Extroverts....
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underactive RAS, underactive cortex...extrovert increases stimulation to compensate
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What structures are above the brain stem?
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Thalamus and Hypothalamus
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Thalamus...
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"sensory relay station"
receives sensory information, passes it to cortex |
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Hypothalamus-location?
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Just in front of and below the thalamus
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Hypothalamus regulates
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(IF IFS)
Internal Environment Fluid balance Internal Body Temperature Food intake Sexual Drive |
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Hypo-Fluid Balance
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a) monitors electrolyte concentration and blood volume
b)makes us thirsty when v= low e= high c)when thirsty, pituitary gland stimulated for ADH |
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Hypo-Body Temp
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if blood temp = high
then hypo makes us try to cool us down (i.e. sweat) if blood temp = low then hypo makes us try to generate heat (i.e. shiver) |
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Hypo-Food Intake
What two nuclei responsible? |
Lateral Nucleus (LN)
Ventromedial nucleus (VMN) |
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If LN damaged...
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rat loses body weight
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If VMN damaged...
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Hyperphagia results.. overeating
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VMN Lesions lead to..
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Greater fussiness bout food taste
Greater laziness about working for food (NOT CAUSE FOR HUMAN OBESITY!) |
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Hypo-Sex Drive
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hypothalamus shows female traits, regulates period in women
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What is the Limbic system?
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a number of interconnected structures deep inside the brain.
All connected to hypothalamus regulate expression of emotion |
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Hippocampus- location?
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in the temporal lobe, beside and outside thalamus... (Seahorse)
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Hippocampus function?
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involved in declarative memory
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what is procedural memory?
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memory for how to perform actions
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What is Declarative memory?
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memory for knowledge(history, etc.) and for events in our past
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Right Hippocampus is for...
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visual and spatial memories
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Left Hippocampus is for...
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non-spatial, mostly verbal memories
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Who was H.M. and what did he prove?
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He was a medical mistake, had his temporal lobes and hippocampi removed, could only have short term memory... could LEARN new skills, can't remember having learnt them
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Amygdala-location/appearance?
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shaped like a walnut, located at tip of hippocampus
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Amygdala-function?
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involved in experience and expression of fear and rage, primarily
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Damage to Amygdala results in..
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inability to recognize or express fear..
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