The Brain III Flashcards
In the brain, starting with the periosteum, what are the layers, including spaces
Periosteum Dura mater Subdural space Arachnoid membrane Subarachnoid space Pia Mater
The subdural space is filled with _____ while the subarachnoid space has ______.
Interstitial fluid
CSF
In the spinal cord, starting with the periosteum, what are the layers, including spaces
Periosteum Epidural space Dura mater Subdural space Arachnoid membrane Subarachnoid space Pia Mater
What fills the epidural space?q
Fat and Loose CT
CSF circulates _________ and ________ the CNS.
Inside
Outside
Name the three ways CSF protects the brain
Mechanical
Chemical
Circulation
How the CSF protect the brain mechanically?
CSF is a shock absorbing fluid
Protects delicate tissue from jolts
How does CSF protect the brain chemically?
Provides the optimal chemical environment for brain tissue
The brain needs a specific tonic balance
What does the circulation of CSF do for the brain?
Its a medium for the exchange of nutrients and waste between blood and nervous tissue
To maintain homeostasis, CSF must be _________ at the ______ _______.
Reabsorbed
Arachnoid villi
The arachnoid villi are _______-like projections into the ______ ______ _______.
Finger
Superior sagittal sinus
CSF reabsorption only happens at the:
Arachnoid villi of the superior sagittal sinus/
What flows in the sinus of the dura mater?
Venous blood to the neck veins
What are the 5 dural sinuses beachy wants us to know?
Superior sagittal sinus Inferior sagittal sinus Straight sagittal sinus Transverse sagittal sinus Sigmoid sagittal sinus
In some places, the meningeal dura mater extends inwards to form flat _____ that anchor the brain to the skull.
Septa
