parts of the brain

• label diagram

  A) central processing unit of nervous system

  B) connection between CNS and body

  C) brain spinal cord

  D) skull

  E) vertebral column

  F) global damage

  G) local damage

  
• label diagram

  A) cerebellum

  B) spinal cord

  C) medulla oblongata

  D) pituitary gland

  E) hypothalamus

  F) corpus callosum

  
• label diagram

  A) cerebrum/ cerebral cortex

  B) corpus callosum

  C) cerebellum

  D) pituitary gland

  E) hypothalamus

  
• corpus callosum function?

  allow 2 hemispheres to communicate
• corpus callosum structure/position?

  section of white matter at base of longitudinal fissure
• where is cerebellum located and what's the structure?

  under cerebrum, rear of brain

  • highly folded
  • outer: grey
  • inner: white
• function of cerebellum?

  posture, balance, coordination, speech

  • smooth, balanced muscular activity
  • receives info from sensory systems, then regulates motor movements
• cerebellum voluntary/involuntary?

  involuntary: produce smooth movements
• medulla oblongata structure?

  continuation of spinal cord
• function of medulla oblongata?

  Automatic adjusts bodily functions unconsciously:

  • cardiac centre
  • vasomotor centre
  • respiratory centre
• cardiac centre?

  regulate rate & force of heartbeat
• vasomotor centre?

  controls blood vessel diameter
• respiratory centre?

  regulates rate and depth of breath
• medulla mostly known for?

  respiration circulation
• where is hypothalamus?

  middle of brain
• what does hypothalamus do?

  maintain homeostasis, may inhibit/stimulate body processes

  • heart rate, bp, body temp, water & electrolyte balance, sleep/wake pattern
• Spinal Cord function?

  pathway of communication,

  • carry info to and fro brain, from sensory receptors
  • relay messages from brain to and from body
  • processes limited amount of sensory info; initiates and control spinal reflexes without input from higher centres within brain
• what does the spinal cord process?

  Limited amount of sensory info

  • initiates and control spinal reflexes without input from higher centres within brain
• where is white matter in spinal cord?

  outside
• wehre is grey matter in spinal cord?

  inner
• what makes up white matter in spinal cord?

  ascending / descending tracts
• ascending tract?

  contain sensory axons that carry impulse to brain
• descending tracts?

  motor axons that carry impulses away from brain to PNS
• structure of cerebrum?

  biggest part

  • outer layer of grey matter: cerebral cortex
• how is the cerebral cortex highly folded?

  convolutions

  sulci: shallow downfolds

  fissure
• convolutions?

  rounded ridges, folds of cerebrum surface
• fissure?

  deep ridges; divides 2 hemispheres
• label lobes of brain?

  label diagram

  A) frontal

  B) parietal

  C) occipital

  D) temporal

  
• where does spinal cord carry information to?

  to and from brain, from sensory receptors
• what does spinal cord relay?

  messages between brain and body
• what are ascending tracts?

  contains sensory axons that carry impulses to brain
• what does medulla oblongata do?

  automatic adjusts bodily functions

  • unconciously
• why is cerebrum involuntary?

  produces smooth movement
• where does cerebellum receive info from?

  sensory systems
• colour of outer cerebellum?

  grey
• colour of inner cerebellum?

  white
• function of cerebellum?

  posture, balance, coordination and speech

  • results: smooth balanced muscular activity
• what are tracts?

  nerves within brain
• what can tracts connect?

  cortex within same hemisphere

  • hemispheres
  • cortex to rest of CNS
• sensory area?

  process nerve impulses from sensory organ and receptors