Anatomy: The Meninges and CSF Circulation

Question 1

Describe the circulation of CSF

Answer 1

Question 2

What is indicated by the arrow?

Answer 2

Third ventricle

Question 3

What is indicated by the arrow?

Answer 3

Left lateral ventricle

Question 4

Where is the choroid plexus found in the adult brain?

Answer 4

3rd, 4th, and lateral ventricles

Question 5

What is indicated by the arrow?

Answer 5

Fourth ventricle

Question 6

What is indicated by the arrow?

Answer 6

Right lateral ventricle

Question 7

What is the function of the choroid plexus?

Answer 7

Specialised secreting cells that produce CSF

Question 8

What is indicated by the arrow?

Answer 8

Dura mater

Question 9

Name the structures which connects fourth ventricles to subarachnoid space

Answer 9

Foramen of Magendie and foramina of Luschka

Question 10

The cavity of the _____ _____ gives rise to the adult brain’s ventricles and the spinal cord’s central canal

Answer 10

Neural canal

Question 11

Name the structure which connects third ventricle to fourth

Answer 11

Cerebral aqueduct (of Sylvius)

Question 12

Which cranial nerve gives sensory innervation to the dura mater?

Answer 12

CN V

Question 13

What is indicated by the arrow?

Answer 13

Superior sagittal sinus

Question 14

Name the contents of the subarachnoid space

Answer 14

Circulating CSF and blood vessels

Question 15

The subarachnoid space can be accessed via _____ _______ at L3/4 or L4/5 disc levels to obtain a sample of CSF

Answer 15

Lumbar puncture

Question 16

What is the arachnoid mater?

Answer 16

Middle layer of the meninges; forms the arachnoid granulations

Question 17

What is the meninges?

Answer 17

Protective coverings of brain and spinal cord

Question 18

The subarachnoid space ends inferiorly at vertebral leve ___

Answer 18

L2

Question 19

What is the pia mater?

Answer 19

Layer of the meninges that adheres to the brain (and vessels and nerves entering or leaving the brain)

Question 20

What is indicated by the arrows?

Answer 20

Subarachnoid space

Question 21

What is indicated by the arrow?

Answer 21

Cerebral aqueduct

Question 22

What is the dura mater?

Answer 22

Layer of the meninges which encloses dural venous sinuses

Question 23

The subarachnoid space communicates with another series of CSF-filled spaces within the brain - the _______

Answer 23

Ventricles

Question 24

What is indicated by the arrow?

Answer 24

Pia mater

Question 25

What is indicated by the arrow?

Answer 25

Arachnoid mater

Question 26

Name the structure which connects lateral ventricles to third ventricle

Answer 26

Intraventricular foramina (of Monroe)

Question 27

What is the embryological origin of the choroid plexus?

Answer 27

Develops from the walls of the ventricles