Meninges, Ventricular System & CSF-Mansour

Question 1

5 functions of CSF

Answer 1

1) Protection

2) Substances to alter neuronal activity

3) Removal of waste metabolites

4) Area to administer drugs/contrast agents

5) Clinical diagnostic tool

Question 2

What is the major source of CSF production

Answer 2

Choroid plexus

Question 3

What can be used to decrease CSF production?

Answer 3

Diuretics

Question 4

T or F: Rate of CSF production is dependent on intracranial pressures?

Answer 4

False; it is Independent

Question 5

Sinuses are the ________ of CSF pressure

Answer 5

Major regulators

Question 6

Describe the flow of CSF from beginning to end

Answer 6

1) Lateral ventricles

2) Third ventricles

3) Mesencephalic aqueduct

4) Fourth ventricle

5) Subarachnoid space

6) Central canal of spinal cord

7) Dorsal sagittal sinus

8) Veins

Question 7

What disease is caused by excess accumulation of CSF in the brain or cranial cavity?

Answer 7

Hydrocephalus

Question 8

Hydrocephalus also causes…

Answer 8

Loss of parenchyma and neoplasia (due to obstruction of flow)

Question 9

3 Characteristics of CSF that should be evaluated

Answer 9

1) clear fluid

2) Protein levels

3) low WBC, cell type present

Question 10

Which 2 two spaces are CSF collected?

Answer 10

Cerebello-medullary cistern and Lumbar region (epidural space)

Question 11

When would a CSF tap be contraindicated and why?

Answer 11

If pressures are suspected to be elevated; causes an increased risk pf brain herniation and death