Embryology of the brain

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  1. What does the CNS begin as?
    As a hollow cylinder AKA neural tube
  2. What is the neural tube filled with?
    It has an internal cavity, filled with fluid, AKA neurocoel
  3. What does the expansion of the neurocoel result in?
    in 3 prominent divisions called the primary brain vesicles
  4. What are the 3 primary brain vesicles called?
    • prosencephalon: forebrain
    • mesencephalon: midbrain
    • rhombencephalon: hindbrain
  5. What does the forebrain consist of?
    • (telencephalon) cerebrum: with lateral ventricle
    • (diencephalon) diencephalonand: with 3rd ventricle
  6. What does the midbrain consist of and what does it do?
    cerebral aqueduct: a ventricle

    connects forebrain to hindbrain
  7. What does the hindbrain consist of?
    • metencephalon: cerebellum and pons
    • myelencephalon: medualla oblongat
  8. What does the brain stem consist of?
    • midbrain
    • pons
    • medulla oblongata¬†

    (me mid poo)
  9. What are the surface features of the brain?
    • gyrus: elevated ridges
    • sulcus: shallow depressions¬†
    • fissures: deeper grooves
  10. Identify the lateral sulcus, central sulcus, calcarian and parietal/occipital sulcus on a brain
    Image Upload
  11. What are the lobes of the brain?
    • parietal lobe
    • temporal lobe
    • occipital lobe
    • frontal lobeImage Upload
  12. Functional areas - central sulcus
    • anterior/pre central: primary motor
    • posterior/post central: somatic sensory
    • Broca's area: speech motor
  13. Functional areas - Wernicke's area
    • crosses over parietal and temporal lobe
    • speech comprehension
  14. Functional areas - calcarine sulcus
    vision processing
  15. Functional areas - auditory processing
    know where it is
  16. What does the post central gyrus control?
    primary sensory
  17. What does the pre central gyrus control?
    primary motor
  18. What does the distorted appearance of the homonculi represent?
    The differences in how richly innervated a region is, not its size

    thus the hand would take up more space then the bladder
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Embryology of the brain
2014-05-03 11:40:10
embryology of brain
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