Brainstem: Difference between revisions
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(Created page with "thumb *Parts of brain hidden by cerebral hemispheres and cerebellum *Contains third and fourth ventricles and cerebral aqueduct *Composed of **'''Midbrain''' (mesencephalon) ***At junction of middle and posterior cranial fossae ***Contains narrow canal: cerebral aqueduct **'''Pons''' ***Found in anterior region of posterior cranial cavity ***Contains cavity that contributes to fourth ventricle **'''Medulla oblongata''' ***Lies...") |
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== Old presentation == | |||
<html><iframe src="https://docs.google.com/presentation/d/e/2PACX-1vQ2HPwFLhTDVk_wLGE7wynW4Uk8a4l2TZbZ-wSVhC5BRLVJuF0K2LWhAzKeOwzlnwWEtyw8WEVUZ1W8/embed?start=false&loop=false&delayms=3000" frameborder="0" width="960" height="569" allowfullscreen="true" mozallowfullscreen="true" webkitallowfullscreen="true"></iframe> </html> | |||
[[File:Medulla midline cross section.png|thumb]] | [[File:Medulla midline cross section.png|thumb]] | ||
*Parts of brain hidden by cerebral hemispheres and cerebellum | *Parts of brain hidden by cerebral hemispheres and cerebellum | ||
Revision as of 03:49, 13 January 2024
Old presentation
- Parts of brain hidden by cerebral hemispheres and cerebellum
- Contains third and fourth ventricles and cerebral aqueduct
- Composed of
- Midbrain (mesencephalon)
- At junction of middle and posterior cranial fossae
- Contains narrow canal: cerebral aqueduct
- Pons
- Found in anterior region of posterior cranial cavity
- Contains cavity that contributes to fourth ventricle
- Medulla oblongata
- Lies in posterior cranial fossa
- Continuous with spinal cord
- Contains inferior portion of fourth ventricle
- Midbrain (mesencephalon)
- Contains masses of gray matter, many of which are sensory and motor nuclei of cranial nerves.
- The brain stem subdivided into three segments:
- Tectum - “roof,” dorsal aspect
- Tegmentum - ventral aspect
- Basis - most ventral aspect of tegmentum (crus cerebri + substantia nigra)