CNS Support Structures Flashcards
0
Q
What is the skull?
A
Rigid bony chamber that contains the brain and facial skeleton, with foremen magnum at its base
1
Q
What structures make up the CNS?
A
Skull Meninges Ventricles Cerebrospinal fluid Blood-brain barrier Blood supply
2
Q
What are meninges?
A
Membranes that envelop the brain
3
Q
What are ventricles?
A
Cavities or ventricles that are filled with cerebrospinal fluid and communicate with each other and the spinal cord canal.
4
Q
What is cerebrospinal fluid?
A
Provides mechanical support (cushions brain), controls brain excitability by regulating ionic composition p, aids in exchange of nutrients and waste products
5
Q
What is the blood-brain barrier?
A
Selective restriction of blood borne substances from entering the CNS; associated with capillary endothelial cells
