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18 Cards in this Set
- Front
- Back
components of brainstem
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diencephalon, midbrain, ponds, medulla oblongata
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brain barrier system
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regulates what can get from bloodstream to tissue fluid of the brain, guard blood capillaries and choroid plexus
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blood CSF barrier
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protects the brain at chloroid plexus
---tight junctions b/w endothelial cells |
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circumventricular organs
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places in third and fourth ventricles where barrier is absent --potential for brain invasion
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medulla oblongata
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regulates
-cardiac center -vasomotor center -respiratory center -reflex center: coughing, sneezing, gagging, swallowing, vomiting.... |
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pons
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sensory roles include hearing, equilibrium and taste and facial sensations
motor roles include urination, eye movement, facial expression, chewing swallowing, tears |
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midbrain
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contains cerebral aqueduct, contains two CNs of eye movement: trochlear and occulomotor, related to cerebral peduncles
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reticular formation
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loosely organized web of gray matter that runs vertically through all levels of the brain stem, deals w/....
1. somatic motor control/muscle tone 2. cardiovascular control 3. pain modulation 4. habituation 5. sleep and consciousness |
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vermis
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connects right and left hemispheres of cerebellum
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thalamus
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ovoid mass on each side of brain perched at the superior end of the brainstem beneath the cerebral hemispheres
-"gateway to cerebral cortex" -key role in motor control-circuits b/w thalamus, cerebellum, and cerebral cortex and basal nuclei -involved w/ limbic system - |
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hypothalamus
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beneath thalamus, around 3rd ventricle
"Pituitary Master" 1. hormone secretion 2. hunger and thirst 3. sleep and wake rhythym 4. autonomic effects - ANS 5. thermoregulation 6. memory 7. emotional behavior |
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circadian rhythyms
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sleep cycles
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parietal lobe association area
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where we percieve stimuli
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temporal lobe association area
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where we identify said stimuli
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frontal lobe association area
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where we plan our response to that stimuli
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prefrontal cortex
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seat of judgement, intense and control over expression of emotions
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hypothalamus and amygdala
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where feelings actually COME FROM
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amygdala
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recieves input from sensory systems and has two outputs
1. hypothalamus: somatic and visceral motor effects of emotion -->heart beating fast, nausea 2. Prefrontal cortex - expression of emotions |