Ch 12

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Author:
jmacedo
ID:
79365
Filename:
Ch 12
Updated:
2011-04-13 13:37:33
Tags:
central nervous system
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Description:
brain
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  1. midbrain
    • cerebral aqueduct
    • visual reflexes
    • auditory reflexes
  2. pons
    • bridge
    • respiratory rate & depth
  3. medulla oblongata
    vital reflex centers
  4. cardiac center
    • medula oblongata,
    • rate and force of contraction
  5. vasomotor center
    • medulla oblongata
    • blood pressure blood vessel diameter
  6. medullary rhythmicity center
    pons and lungs to regulate breathing
  7. reticular formation
    • brain system associated with the brain stem
    • keep brain aroused
    • filter out stimuli that repetetive
  8. brain stem
    • midbrain
    • pons
    • medulla oblongata
  9. diencephalon
    • thalamus
    • hypothalamus
    • epithalamus
  10. thalamus
    gateway to cortex, numerous nuclei, relay station for incoming sensory information to the cortex for processing
  11. hypothalamus
    • many homeostatic roles
    • autonomic control center
    • emotional responses- gut feelins
    • thermostat
    • food intake
    • water balance
    • sleep wake cycles
    • endocrine system
  12. epithalamus
    • pineal gland
    • melatonin
    • sleep wake cycles
  13. lymbic system-
    • associated with diencephalon structures
    • emotional responses/emotional brain
    • expressions/gestures
    • odors
    • danger/fear
  14. cerebral hemispheres
    • 83% brain mass,
    • cortex-white matter-basal nuclei
  15. cortex of cerebral hemisphere
    • functional areas- motor, sensory, association
    • controls opposite side of body
    • overlap
  16. primary motor cortex
    certain regions control opposite sides of body
  17. premotor cortex
    learned motor skills- typing, musical instrument
  18. broca's area
    motor speech area
  19. frontal eye field
    scanning eye movements
  20. primary somatosensory cortex
    receive info from skin and muscles and joints
  21. somatosensory association cortex
    sensory input to understand objects being felt (size, texture)
  22. primary visual cortex
    receives input from retina, largest sensory area
  23. visual association area
    past visual experiences to interpret visual stimuli- recognition
  24. primary auditory cortex
    pitch volume location
  25. auditory association area
    perception as speech music noise, memories of sounds
  26. oflactory cortex
    afferent impulses from receptors in nose, odors
  27. gustatory cortex
    taste
  28. visceral sensory area
    sensations from stomach, bladder
  29. vestibular cortex
    balance
  30. anterior association (prefrontal cortex)
    • intellect
    • complex learning abilities
    • working memory
    • reasoning, abstract thinking
    • personality
  31. posterior association area
    • pattern and face recognition
    • written and spoken language
  32. limbic association area
    emotional impact of a scene and memory of it
  33. left brain
    language, math, logic
  34. right brain
    visual-spatial skills, intuition, emotion, artistic ability
  35. commissural fibers-
    connect two hemispheres
  36. association fibers
    connect different parts of the same hemisphere
  37. projection fibers
    cerebrum & other brain regions
  38. cerebellum
    • subconscious activity
    • coordination
    • posture maintenance
    • motor memories
    • motor- some non motor are word association and puzzle solving
  39. choroid plexuses
    form CSF
  40. bbb
    • chemical stability in brain
    • exceptionally selective
    • not uniform throughout brain
    • glucose, amino acids, electrolytes diffuse
  41. ventral root
    motor
  42. dorsal root
    sensory
  43. concussion
    alters brain function
  44. contusion
    bruising in brain
  45. subdural hemorrhage
    bleeding within spaces
  46. cerebral edema
    swelling/ fluid accumulation
  47. parkinsons
    degeneration of dopamine release, tremors
  48. huntingtons
    fatal, 15 years of onset

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