Lecture Notes: Brain Vesicle Development

Overview

• Focus on primary and secondary structures leading to adult brain.
• Two slides used to meet the level three objective.
  • Slide covers secondary brain vesicles and mature structures.

Key Concepts

Brain Vesicles and Development

• Primary Brain Vesicles:

  • Neural tube develops into:
    • Prosencephalon
    • Mesencephalon
    • Rhombencephalon

• Secondary Brain Vesicles:

  • Prosencephalon -> Telencephalon, Diencephalon
  • Mesencephalon -> Mesencephalon
  • Rhombencephalon -> Metencephalon, Myelencephalon

Outcomes of Brain Vesicle Development

• Telencephalon: Develops into the cerebrum, comprising various lobes.
• Diencephalon: Remains as diencephalon (thalamus, epithalamus, hypothalamus).
• Mesencephalon: Becomes part of the brain stem, specifically the peduncles and superior/inferior colliculi.
• Metencephalon: Forms cerebellum and pons (part of the brain stem).
• Myelencephalon: Develops into the medulla oblongata.

Examination Points

• Cerebrum:

  • Primary: Prosencephalon
  • Secondary: Telencephalon

• Thalamus/Diencephalon:

  • Primary: Prosencephalon
  • Secondary: Diencephalon

• Superior/Inferior Colliculi & Cerebral Peduncles:

  • Primary: Mesencephalon
  • Secondary: Mesencephalon

• Pons/Cerebellum:

  • Primary: Rhombencephalon
  • Secondary: Metencephalon

• Medulla Oblongata:

  • Primary: Rhombencephalon
  • Secondary: Myelencephalon

Additional Notes

• Secondary vesicles are highlighted in slides; primary vesicles need to be known.
• Titles in brain lecture slides list primary/secondary vesicles before new structures.