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Questions and Answers
What encases the brain to protect it from injury?
What encases the brain to protect it from injury?
- Cerebrospinal fluid
- Cranium (correct)
- Vertebral column
- Meninges
What limits the access of blood borne materials into the brain tissue?
What limits the access of blood borne materials into the brain tissue?
- Meninges
- Cerebrospinal fluid
- Highly selective blood brain barrier (correct)
- Ventricles of the brain
Where is cerebrospinal fluid present in the nervous system?
Where is cerebrospinal fluid present in the nervous system?
- Cerebral cavity, meminges, subarachnoid space around the brain
- Ventricles of the brain, cisterns around the outside of the brain, subarachnoid space around both the brain and spinal cord (correct)
- Meninges, vertebral column, cerebral cavity
- Cranium, ventricles of the brain, spinal cord
What is the total capacity of the cerebral cavity enclosing the brain and spinal cord?
What is the total capacity of the cerebral cavity enclosing the brain and spinal cord?
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How is the pressure of cerebrospinal fluid maintained?
How is the pressure of cerebrospinal fluid maintained?
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Study Notes
Brain Protection and Cerebrospinal Fluid
- The brain is encased in the cranium, which protects it from injury.
- The blood-brain barrier limits the access of blood-borne materials into the brain tissue.
- Cerebrospinal fluid (CSF) is present in the nervous system, specifically in the cerebral ventricles, subarachnoid space, and central canal of the spinal cord.
- The total capacity of the cerebral cavity enclosing the brain and spinal cord is approximately 150 mL.
- The pressure of cerebrospinal fluid is maintained by a delicate balance between its production and absorption, with an average pressure of 10-15 mmHg.
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