18 Questions
Where do we find motor neurons in the grey matter?
In the anterior horn
What is the function of the commissure in the grey matter?
It connects one antimere to the other
What is the role of ependymal cells in the grey matter?
Line the central canal
Where is the central canal located in relation to the grey matter?
Within the lumen of the neural tube
What happens to the marginal layer as we move downwards along the spine?
It becomes less evident
Which part of the grey matter contains sensory neurons?
Posterior horn
What do motor axons form in the grey matter?
Ventral motor root of the spinal nerve
What decreases progressively as we move inferiorly in the grey matter?
Size of white matter
Where does the CSF flow after entering the fourth ventricle?
Downwards through the central canal
What is the purpose of the liquoral circulation (circulation of the CSF)?
To carry waste products away from the nervous tissue
Where does the reabsorption of CSF occur within the subarachnoid space?
At the level of arachnoid granulations
Where is the central canal of the spinal cord connected to, and what does it receive?
It is connected to the fourth ventricle and receives cerebrospinal fluid
What structures facilitate communication between the ventricular system and the subarachnoid space?
Lateral foramen of Luschka
What forms the liquoral system, and what flows within this system?
Ventricular system; cerebrospinal fluid
What is the main purpose of performing a lumbar puncture to sample cerebrospinal fluid?
To diagnose ongoing infections in the nervous system
Why is the Lumbar Cistern considered an important anatomical structure for performing lumbar punctures?
It only contains rootlets of the nerves, providing a safe space for sampling CSF
What is the significance of enlarged ventricular cavities in relation to aging and the brain's consistency?
It compensates for encephalic volume loss and age-related brain changes
What role do subarachnoid cisterns and enlargements of the subarachnoid space play in the process of lumbar puncturing?
They provide a safe space for inserting the needle to sample CSF
Test your knowledge of the spinal cord anatomy, focusing on the structure and function of the meninges and epidural fat. Understand the importance of these components in protecting and supporting the spinal cord.
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