1.8 The Ventricles and CSF Flashcards
What are Ventricles?
Ventricles are interconnected spaces / cavities which lie within the Brain
What is a continuation of the Ventricular System within the Spinal Cord?
The Central Canal
What embryological structure are the Ventricles formed from?
The Neural Tube
What are 5 main parts of the Ventricular System within the Cranium?
- The Lateral Ventricle
- The Interventricular Foramen (Foramen of Monro)
- The 3rd Ventricle (III Ventricle)
- The Cerebral Aqueduct
- the 4th Ventricle (IV Ventricle)
Where does the Anterior Horn of the Lateral Ventricle lie?
In the Frontal Lobe
Where does the Body of the Lateral Ventricle lie?
In the Frontal / Parietal Lobes
Where does the Posterior Horn of the Lateral Ventricle lie?
In the Occipital Lobe
Where does the Inferior Horn of the Lateral Ventricle lie?
In the Temporal Lobe
Where does the Interventricular Foramen lie?
Over the Anterior Pole of the Thalamus
Where does the 3rd Ventricle (III Ventricle) lie?
Within the Diencephalon
Where does the Cerebral Aqueduct lie?
Within the Midbrain
Where does the 4th Ventricle (IV Ventricle) lie?
- The Dorsal Surface of the Brainstem
2. Beneath and Anterior to the Cerebellum
What is the name given to the specialised structures within the lining of the Ventricles which produce Cerebrospinal Fluid (CSF)?
The Choroid Plexus
What is the Choroid Plexus?
An invagination of Pia matter which produces Cerebrospinal Fluid
How does the Cerebrospinal Fluid (CSF) pass into the Sub-Arachnoid space from the 4th Ventricle (IV Ventricle)?
Through 3 Apperatures on the Roof of the Ventricle:
- The Cisterna Magna (Median Apperature)
- The Left Pontine Cisterna (Lateral Apperature)
- The Right Pontine Cisterna (Lateral Apperature)
