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Head & Neck Q2.1
Ventricles & CSF
Question | Answer |
---|---|
What structure are ventricles derived from? | Neural Tube |
What separates the right and left lateral ventricles at the midline? | Septum Pellucidum |
What is the midline ventricle that separates the right and left portions of the thalamus? | Third Ventricle |
What connects the right and left portions of the thalamus? | Massa Intermedia |
What are the two openings that connect that lateral ventricles to the third ventricle? | Interventricular Foramen |
What is the narrow channel passing along the mid-line through the midbrain? (Hint: Connects the third and fourth ventricles) | Cerebral Aquaduct |
What structure is the midline ventricle located between the base of the cerebellum and the posterior side of the brainstem? | Fourth Ventricle |
What is the very narrow space running down the center of the spinal cord? | Central Canal |
What two spaces does the cerebrospinal fluid occupy? | Ventricles, Central Canal, and Subarachnoid Space |
What are the three functions of cerebrospinal fluid? | 1. To act as a shock absorber for the brain and spinal cord2. To transport nutrients and remove waste products3. To maintain proper ion (Na+, K+) balance for nervous tissue |
What continuously produces cerebrospinal fluid? | Choroid Plexus |
Where is the choroid plexus located? | In the walls of the lateral, third, and fourth ventricles |
Via what structure is cerebrospinal fluid continuously removed from the subarachnoid space? | Arachnoid Granulations |