Brain

Brain
  • 750-2100cc
  • 97% neural tissue
  • 1.4kg (3 lb)
Embryonic Development 

Ventricle 

Physical Protection
  • cranium
  • cranial meninges - dura外, arachnoid, pia内
  • CSF
    • Buoyancy
    • Protection 
    • Environmental stability 

Biochemical Isolation
  • BBB
    • Regulate substances entering interstitial fluid 
  • Blood-CSF Barrier
    • ependymal cell
    • capillaries of choroid plexus 
Brain Region 
  • Cerebrum 大脑
    • outer gray, inner white
    • gyri separated by sulci/fissure
    • hemisphere lateralization
    • Lobe 
    • frontal = voluntary motor, concentration, verbal communication, decision making, planning, personality 
    • parietal = sensory function
    • temporal 听闻
    • occipital 目
    • lateral sulcus + insula = memory & taste 
    • Functional Areas
    • Cerebral/Basal Nuclei 
  • Diencephalon
    • Epithalamus
      • pineal gland - melatonin
      • habenular nuclei 
    • Thalamus
 
    • Hypothalamus
 

  • Limbic System
  • Medulla Oblongata & Pons 
  • Cerebellum 小脑
   

  • Midbrain
 




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