Fourth ventricle
          By
  Dr. Noura El Tahawy
Sagittal section of the brainstem & cerebellum




The diagram showing the position of the fourth ventricle. Cerebrospinal...
Sagittal hemisection of the brain




Sagittal hemisection of the brain to show the third and fourth ventricles.
         ...
Fourth ventricle

Central canal →fourth ventricle →mesencephalic aqueduct→third ventricle




 Position
    Situated ventr...
MRI scan of head in sagittal plane.
Projection of the ventricles onto the left surface of the brain.
Boundaries & floor of   4 th

      ventricle
Posterior view of the brainstem.
Fourth ventricle

Boundaries
  Inferolateral:
  gracile and
  cuneate tubercles,
  inferior cerebellar
  peduncles
  Super...
Floor of the Fourth ventricle

Pontine part
  Median sulcus                       Vestibular area
  Sulcus limitans
  Medi...
Floor of the Fourth ventricle

Medullary
 part
-Inferior fovea
1- Hypoglossal
   triangle:
 overlying
   hypoglossal
   nu...
Roof of   4 th   Ventricle
Fourth ventricle
Roof
  Rostral part:
  -superior cerebellar
  peduncle and superior
  - medullary velum

  Caudal part:
 ...
Recesses of   4th

  Ventricle
Tela choroidea and choroid plexus
The arrangement of tissues forming the choroid plexus.
CSF




 The cerebral ventricular system and its relationship with the subarachnoid space .The
                circulation...
Transverse section through the superior sagittal sinus showing arachnoid villi .
Superior aspect of the cerebral hemispheres showing arachnoid granulations on the right
               side .On the left s...
Thanks


You can download this lecture from:

http://www.slideshare.net/drnosman
Fourth ventricle
Fourth ventricle
Fourth ventricle
Fourth ventricle
Fourth ventricle
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Fourth ventricle

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Lectures of neuroanatomy by Dr. Noura El Tahawy

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Fourth ventricle

  1. 1. Fourth ventricle By Dr. Noura El Tahawy
  2. 2. Sagittal section of the brainstem & cerebellum The diagram showing the position of the fourth ventricle. Cerebrospinal fluid descends along the aqueduct into the fourth ventricle and emerges into the subarachnoid space via three apertures including the median aperture containing the arrow.
  3. 3. Sagittal hemisection of the brain Sagittal hemisection of the brain to show the third and fourth ventricles. Pia mater: red; ependyma: blue.
  4. 4. Fourth ventricle Central canal →fourth ventricle →mesencephalic aqueduct→third ventricle Position Situated ventral to cerebellum, and dorsal to pons and cranial half of medulla
  5. 5. MRI scan of head in sagittal plane.
  6. 6. Projection of the ventricles onto the left surface of the brain.
  7. 7. Boundaries & floor of 4 th ventricle
  8. 8. Posterior view of the brainstem.
  9. 9. Fourth ventricle Boundaries Inferolateral: gracile and cuneate tubercles, inferior cerebellar peduncles Superolateral: superior cerebellar peduncle Lateral recess
  10. 10. Floor of the Fourth ventricle Pontine part Median sulcus Vestibular area Sulcus limitans Medial eminence - Facial colliculus: overlies nucleus of abducent n. and genu of facial nerve - Hypoglossal triangle •Striae medullares Vestibular area overlies vestibular nuclei Acoustic tubercle overlying dorsal cochlear nucleus Inferior fovea (Vagal triangle)
  11. 11. Floor of the Fourth ventricle Medullary part -Inferior fovea 1- Hypoglossal triangle: overlying hypoglossal nucleus 2-Vestibular triagle 3- Vagal triangle: overlies dorsal nucleus of vagus nerve
  12. 12. Roof of 4 th Ventricle
  13. 13. Fourth ventricle Roof Rostral part: -superior cerebellar peduncle and superior - medullary velum Caudal part: -inferior medullary velum and choroid plexus of fourth ventricle Three apertures Median aperture (F. of Magendi) Two lateral apertures (foramina of Luschka)
  14. 14. Recesses of 4th Ventricle
  15. 15. Tela choroidea and choroid plexus
  16. 16. The arrangement of tissues forming the choroid plexus.
  17. 17. CSF The cerebral ventricular system and its relationship with the subarachnoid space .The circulation of cerebrospinal fluid is indicated by arrows .
  18. 18. Transverse section through the superior sagittal sinus showing arachnoid villi .
  19. 19. Superior aspect of the cerebral hemispheres showing arachnoid granulations on the right side .On the left side, the arachnoid mater has been removed .
  20. 20. Thanks You can download this lecture from: http://www.slideshare.net/drnosman
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