Chapter 13

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Author:
SeanOHair
ID:
151269
Filename:
Chapter 13
Updated:
2012-05-01 02:01:59
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ANAT 150 Crafton Hills College
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Description:
Development of the embryonic brain, and information about pertinent nuclei
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  1. During early embryonic development, what are the three portions of the brain called?
    • Prosencephalon
    • Mesencephalon
    • Rhombencephalon
  2. The Prosencephalon develops into what structures during the late embryonic stage?
    • Telencephalon
    • Diencephalon
  3. The Mesencephalon develops into what structure during the late embryonic stage?
    Still called the Mesencephalon
  4. The Rhombencephalon develops into what structures during the late embryonic stage?
    • Metencephalon
    • Myelencephalon
  5. What structure in the adult brain does the Telencephalon become?
    The cerebrum
  6. What structures in the adult brain does the Diencephalon become?
    Still called the Diencephalon (contains the thalamus and related structures)
  7. What structure in the adult brain does the Mesencephalon become?
    Still called the Mesencephalon (midbrain)
  8. What structures in the adult brain does the Metencephalon become?
    • Pons
    • Cerebellum
  9. What structure in the adult brain does the Myelencephalon become?
    Medulla Oblongata
  10. Give the forebearance of the cerebrum.
    Prosencephalon >> Telencephalon >> Cerebrum
  11. Give the forebearance of the thalamus.
    Prosencephalon >> Diencephalon >> Diencephalon
  12. Give the forebearance of the midbrain.
    Mesencephalon >> Mesencephalon >> Mesencephalon
  13. Give the forebearance of the pons and cerebellum.
    Rhombencephalon >> Metencephalon >> Pons and Cerebellum
  14. Give the forebearance of the medulla oblongata.
    Rhombencephalon >> Myelencephalon >> Medulla Oblongata
  15. What cavities does the Telencephalon contain?
    Lateral ventricles
  16. What cavity does the Diencephalon contain?
    3rd ventricle
  17. What cavities does the Prosencephalon contain?
    Lateral ventricles and 3rd ventricle
  18. What cavity does the Mesencephalon contain?
    Cerebral aqueduct
  19. What cavities does the Rhombencephalon contain?
    • 4th ventricle
    • Central canal
  20. What cavity does the Metencephalon contain?
    4th ventricle
  21. What cavity does the Myelencephalon contain?
    Central canal
  22. What function does the Telencephalon acquire in adulthood?
    Higher brain functions (it is the cerebrum)
  23. What function does the Diencephalon acquire in aduthood?
    • Relay center (subthalamus)
    • ANS control and main relay station (thalamus)
    • Endocrine and homeostatic control (hypothalamus)
    • Olfactory nuclei and Pineal gland (epithalamus)
  24. What function does the Mesencephalon acquire in adulthood?
    This is the midbrain

    • - Nerve tract pathways
    • - Visual reflex (superior colliculi of corpora quadrigemina)
    • - Part of auditory pathway (inferior colliculi of corpora quadrigemina
    • - Also contains parts of the basal nuclei such as the red nuclei and the substantia nigra
  25. What function does the Metencephalon acquire in adulthood?
    It is the Pons and Cerebellum

    • - Nerve pathways (Pons)
    • - Reflex centers (Pons)
    • - Muscle coordination and smoothing (Cerebellum)
    • - Balance (Cerebellum)
  26. What function does the Myelencephalon acquire in adulthood?
    It is the Medulla Oblongata

    • - Nerve tract pathways
    • - Centers for breathing, swallowing (and vomiting), and heart rate
  27. Where is the Medial Geniculate Nucleus located and what function is it involved in?
    • Medial aspect of the thalamus
    • Involved in directing auditory information to the cerebrum
  28. Where are the Lateral Geniculate Nuclei located and what function are they involved in?
    • Posterolateral aspect of the thalamus
    • Involved in directing visual information to the cerebrum
  29. Where are the Ventral Posterior Nuclei located and what function are they involved in?
    • Posterolateral aspect of the thalams (medial to the Lateral Geniculate Nuclei)
    • Involved in sending almost all other sensory input from the spinal cord to the 1o somatosensory cortex (other than auditory or visual, which have their own pathways)
  30. Where are the Red Nuclei located and what is their function?
    • Located in the Tegmentum (body of the midbrain)
    • They aid in unconscious control of skeletal muscle coordination
  31. Where are the Substantia Nigra located and what is their function?
    • Located in the Tegmentum (body) of the midbrain
    • Involved in production of dopamine and suspected site of lesions causing Parkinson's (treated with L-dopa)

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