Neurophysiology

Question 1

What are the roles of the sulci and gyri in the cerebral cortex?

Answer 1

They are the fold and ridges in the brain. They allow more cerebral cortex to be accommodated in a fixed brain volume

Question 2

Where in the brain are cell bodies of nerves contained?

Answer 2

In the cerebral cortex

Question 3

What are the meninges?

Answer 3

Three protective layers of connective tissue which cover the brain and spinal cord.

Question 4

What are the three layers of the meninges?

Answer 4

Dura mater - outermost (closest to scalp)
Arachnoid mater mater - middle
Pia mater - innermost (closest to brain)

Question 5

What is meningitis?

Answer 5

Inflammation of the meninges

Question 6

Meningitis is a result of a bacterial infection only. True or false?

Answer 6

False - bacterial infection more common but can be viral infection

Question 7

What drug is given to treat meningitis?

Answer 7

Benzylpenicillin ASAP - then hospitalisation then cefoxatime.
If patient has penicillin allergy then give cefoxatime only

Question 8

What is the glass test and what is it used for?

Answer 8

Used in meningitis.
Press and roll glass over rash. If rash disappears, then not meningitis, if it doesn’t then it could be life threatening meningitis

Question 9

What is the average amount of CSF in a healthy adult?

Answer 9

150ml

Question 10

Where is CSF produced?

Answer 10

Produced by choroid plexuses in the lateral ventricles