Anatomy: The Meninges and CSF Circulation Flashcards
Describe the circulation of CSF
What is indicated by the arrow?
Third ventricle
What is indicated by the arrow?
Left lateral ventricle
Where is the choroid plexus found in the adult brain?
3rd, 4th, and lateral ventricles
What is indicated by the arrow?
Fourth ventricle
What is indicated by the arrow?
Right lateral ventricle
What is the function of the choroid plexus?
Specialised secreting cells that produce CSF
What is indicated by the arrow?
Dura mater
Name the structures which connects fourth ventricles to subarachnoid space
Foramen of Magendie and foramina of Luschka
The cavity of the _____ _____ gives rise to the adult brain’s ventricles and the spinal cord’s central canal
Neural canal
Name the structure which connects third ventricle to fourth
Cerebral aqueduct (of Sylvius)
Which cranial nerve gives sensory innervation to the dura mater?
CN V
What is indicated by the arrow?
Superior sagittal sinus
Name the contents of the subarachnoid space
Circulating CSF and blood vessels
The subarachnoid space can be accessed via _____ _______ at L3/4 or L4/5 disc levels to obtain a sample of CSF
Lumbar puncture
What is the arachnoid mater?
Middle layer of the meninges; forms the arachnoid granulations
What is the meninges?
Protective coverings of brain and spinal cord
The subarachnoid space ends inferiorly at vertebral leve ___
L2
What is the pia mater?
Layer of the meninges that adheres to the brain (and vessels and nerves entering or leaving the brain)
What is indicated by the arrows?
Subarachnoid space
What is indicated by the arrow?
Cerebral aqueduct
What is the dura mater?
Layer of the meninges which encloses dural venous sinuses
The subarachnoid space communicates with another series of CSF-filled spaces within the brain - the _______
Ventricles
What is indicated by the arrow?
Pia mater
