Examville
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Ventricles
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They are lined with ependyma and contain CSF. Contain choroid plexus, which produces CSF at a rate of 500 ml/day. Consist of four fluid filled communicating cavities within the brain
A. Lateral Ventricles -
Are the two ventricles located within the cerebral hemispheres communicate with the third ventricle via the interventricular foramina of Monro. Consist of five parts: 1. Frontal (anterior) horn 2. Body 3. Temporal (inferior) horn 4. Occipital (posterior) horn 5. Trigone (atrium)
B. Third Ventricle -
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It is a slit-like, vertical midline cavity of the diencephalon. communicates with the lateral ventricles via the interventricular foramina of Monro and with the fourth ventricle via the cerebral aqueduct. Contains a pair of choroid plexuses in its roof.
C. Cerebral aqueduct (aqueduct of Sylvus) -
Lies in the midbrain. Connects the third ventricle with the fourth ventricle. Lacks choroid plexus. Blockage leads to hydrocephalus (aqueductal stenosis).
D. Fourth Ventricle -
Lies between the cerebellum and the brainstem. Contains a pair of choroid plexuses in its caudal roof. Expresses CSF into the subarachnoid space via the two lateral foramina of Luschka and single medial foramen of Magendie
-
They are lined with ependyma and contain CSF. Contain choroid plexus, which produces CSF at a rate of 500 ml/day. Consist of four fluid filled communicating cavities within the brain
A. Lateral Ventricles -
Are the two ventricles located within the cerebral hemispheres communicate with the third ventricle via the interventricular foramina of Monro. Consist of five parts: 1. Frontal (anterior) horn 2. Body 3. Temporal (inferior) horn 4. Occipital (posterior) horn 5. Trigone (atrium)
B. Third Ventricle -
-
It is a slit-like, vertical midline cavity of the diencephalon. communicates with the lateral ventricles via the interventricular foramina of Monro and with the fourth ventricle via the cerebral aqueduct. Contains a pair of choroid plexuses in its roof.
C. Cerebral aqueduct (aqueduct of Sylvus) -
Lies in the midbrain. Connects the third ventricle with the fourth ventricle. Lacks choroid plexus. Blockage leads to hydrocephalus (aqueductal stenosis).
D. Fourth Ventricle -
Lies between the cerebellum and the brainstem. Contains a pair of choroid plexuses in its caudal roof. Expresses CSF into the subarachnoid space via the two lateral foramina of Luschka and single medial foramen of Magendie
