Nervous System Part 4 (D)

Question 1

In what cavities are CSF produced?

Answer 1

Ventricles

Question 2

What makes CSF

Answer 2

Choroid Plexus

Question 3

How does CSF get from the ventricles to the subarachnoid space (to “float” the brain and nurish it)

Answer 3

Foramen of Magendie (most of it)

and

Lateral Foramina (a little bit)

*the foramen of magendie is basically a hole in the lower posterior part of the 4th ventricle that leaks into the subarachnoid space around the cerebellum and it goes up to the cerebrum

Question 4

A blockage of the foramen of magendie would result in what?

Answer 4

Hydrocephalus

Question 5

Hydrocephalus

Answer 5

Back-up of CSF in the ventricles

Question 6

What connects the lateral ventricles to the 3rd ventricle?

Answer 6

Interventricular foramen

Question 7

What connects the 3rd ventricle to the 4th ventricle?

Answer 7

Cerebral aqueduct

Question 8

Where specifically does CSF absorption occur?

Answer 8

Arachnoid villa into the superior sagittal sinus

Question 9

Calcified arachnoid villi are called

Answer 9

Pacchionian bodies

Question 10

Hydrocephalus in the elderly population resulting from a backup of CSF in the subarachnoid space would be because of what?

Answer 10

Pacchionian bodies

*calcification of arachnoid villi

Question 11

CSF flows through the ventricles and _______ space

Answer 11

subarachnoid space

Question 12

In what sinus does CSF absorption occur?

Answer 12

Superior sagittal sinus

Question 13

Normal CSF pressure lying down?

Answer 13

8-15 mmHg

Question 14

Normal CSF pressure standing up?

Answer 14

16-24 mmHg