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Introduction to Nueroscience > Ventricles > Flashcards

Flashcards in Ventricles Deck (16)
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1
Q

What forms the ventricular system?

A

The lumen (central cavity) of the neural tube expanding with the developing vesicles

2
Q

What ventricles are formed from the telencephalon?

A

The two lateral ventricles are formed from the telencephalon (cerebral hemispheres)

3
Q

What ventricle is formed from the Diencephalon?

A

The third ventricle

—a third midline unpaired ventricle

4
Q

What ventricle is formed from in the pons and medulla, just below the cerebellum?

A

The forth ventricle

—a fourth midline unpaired ventricle

5
Q

Ventricles are defined as?

A

Cavities within the Central Nervous System, derived developmentally from the neurotube

6
Q

Lateral ventricles occur where?

A

In each of the two cerebral hemispheres

7
Q

The lateral ventricles are continuous with what?

A

A single midline Third Ventricle through interventricular foramen of Monro

8
Q

What is the inter ventricular foramen of Monro?

A

It connects the Right and left sides of the lateral Ventricles
—it is responsible for allowing Cerebrospinal fluid (CSF) to get into the third ventricle

9
Q

Where does the the third ventricle occur?

A

On the midline in the sagittal plane & is continuous caudally with the Cerebral aqueduct of Sylvius in the midbrain

10
Q

What is the Cerebral Aqueduct of Sylvius?

A

A canal that connects the 3rd ventricle to the 4th ventricle

11
Q

What does the Cerebral Aqueduct of Sylvius do?

A

The cerebral aqueduct empties into the fourth ventricle of the pons and medulla

12
Q

The fourth ventricle is continuous with what?

A

Remnants of the central canal of the spinal cord

13
Q

The fourth ventricle communicates with what space?

A

The subarachnoid space

14
Q

Through what/ How does the 4th ventricle communicate with subarachnoid space?

A

Two lateral apertures
—Foramina of Luschka
One midline aperture
—Foramen of Magendie

15
Q

What is the purpose of the Foramina of Luschka and the Foramen of Magendie?

A

They are the last 3 foramina that allow for CSF to leave the ventricular system

16
Q

Once CSF leaves the ventricle system what is it’s fate?

A

The CSF leaves the ventricular system and enters the subarachnoid space and eventually enters the venous system via the dural sinuses