ventricles

Question 1

An internal cavity within the brain, filled with CSF

Answer 1

Ventricles

Question 2

Content of Ventricles

Answer 2

1. lateral ventricle
2. 3rd ventricle
3. 4th ventricle
4. central canal of the medulla oblongata and SC
5. interventricular foramen of monro
6. cerebral aqueduct of sylvius

Question 3

two curved shaped cavities located within the cerebrum

Answer 3

Lateral Ventricles

Question 4

separated by the septum pellucidum and do not communicate directly

Answer 4

Lateral Ventricles

Question 5

c-shaped, may be divided into

Answer 5

o body (occupies the parietal lobe)
2. anterior horn (extends to the frontal lobe)
3. posterior horn (extends into the occipital lobe)
4. inferior horn (extends into the temporal lobe)

Question 6

Lateral Ventricle – Anterior Horn

Answer 6

Roof: corpus callosum
Floor: head of the caudate nucleus
Medial Wall: septum pellucidum and anterior column of the fornix

Question 7

Lateral Ventricle – Body

Answer 7

Roof: body of the corpus callosum
Floor: body of the caudate nucleus and lateral margin of the thalamus
Medial Wall: septum pellucidum

Question 8

Lateral Ventricle – Posterior Horn

Answer 8

Roof and Lateral Wall: tapetum of corpus callosum
Medial Wall has 2 Elevations:
a) forceps major
b) calcar avis

Question 9

Lateral Ventricle – Inferior Horn

Answer 9

Roof: formed by tapetum of corpus callosum and by tail of the caudate nucleus
Floor: formed laterally by collateral eminence, produced by the collateral fissure
Medial Wall: hippocampus

Question 10

communicates lateral ventricle with 3rd ventricle

Answer 10

Foramen of Monro

Question 11

Third Ventricle

Answer 11

Roof: body of the fornix
Floor: thalamus
Medial Wall: hypothalamus

Question 12

lined with ependymal

Answer 12

Cerebral Aqueduct

Question 13

surrounded by layer of grey matter called the central grey

Answer 13

Cerebral Aqueduct

Question 14

rhomboid, diamond or tent shape

Answer 14

4th Ventricle

Question 15

communicates with the subarachnoid space via:
foramen magendie: medial opening/aperture
foramen luschka: paired lateral apertures

Answer 15

4th Ventricle to SA space

Question 16

opens superiorly into 4th ventricle

Answer 16

Central Canal

Question 17

lined with ependyma but no choroid plexus

Answer 17

Central Canal

Question 18

space between the arachnoid mater and pia mater

Answer 18

Subarachnoid space

Question 19

thin, highly vascularized, loose connective tissue; pia and ependyma that gives rise to the choroid plexus

Answer 19

Tela choroidea

Question 20

plexus of epithelial cells that produces the CSF in the ventricles of the brain
* T shaped

Answer 20

Choroid Plexus

Question 21

Blood supply of Choroid plexus of the lat. & 3rd ventricles

Answer 21

1. choroidal branches of the internal carotid artery
2. basilar artery

Question 22

Blood supply of choroid plexus of the 4rth ventricle

Answer 22

PICA of VA

Question 23

Blood supply of venous blood drains into

Answer 23

1. Internal cerebral veins
2. The great cerebral vein drains onto the inferior sagittal sinus

Question 24

clear, colorless fluid found in the ventricles and subarachnoid space around the brain and SC

Answer 24

CSF

Question 25

Where can you find csf?

Answer 25

Ventricles, SA, Ependymal & pial surfaces

Question 26

What produces CSF?

Answer 26

Choroid Plexus

Question 27

It cushions and protects the CNS from trauma

Answer 27

CSF

Question 28

It provides mechanical buoyancy and support for the brain

Answer 28

CSF

Question 29

It nourishes the CNS

Answer 29

CSF

Question 30

It removes metabolites CNS

Answer 30

CSF

Question 31

It serves as a pathway for pineal secretions to reach the pituitary gland

Answer 31

CSF

Question 32

Where is choroid plexus of the ventricle cavities' formed?

Answer 32

Lateral ventricle (3rd&4th)

Question 33

Movement of CSF inside the ventricle is controlled by the:

Answer 33

1. pulsations of the artery(choroid plexus) 2. aid of the cilia and microvilli(ependymal cells)

Question 34

further movement of CSF is reliant on several factors which are

Answer 34

1. pulsations of spinal arteries 2. movement of the vertebral column 3. respiration 4. coughing 5. changing body positions

Question 35

It serves as valves: when CSF pressure greater than venous pressure, absorption of the CSF occurs

Answer 35

Arachnoid Villi

Question 36

Absorption of CSF

Answer 36

* some CSF absorbed directly into the veins in SA space * some CSF absorbed through lymphatic vessels

Question 37

Where does the SA extends?

Answer 37

* around optic nerve to the back of the eyeball * cranial and spinal nerves * perineural lymph nodes * arteries and veins of the SC * SA space

Question 38

Where does the CSF flows through?

Answer 38

Intraventricular foramina of 3rd ventricle

Question 39

Other term for Blood Brain Barrier (BBB)

Answer 39

Blood Brain Spinal Cord Barrier

Question 40

free passage of water, gases, and lipid soluble substances from blood to CSF

Answer 40

Blood Cerebrospinal Fluid Barrier

Question 40

Structures that separate CSF from nervous tissue:

Answer 40

* pia covering brain and SC * astrocytic foot processes * perivascular extensions of the SA space * ependymal surface of the ventricles

Question 41

derived from the Greek word “hydro” meaning water and “cephalus” meaning head

Answer 41

Hydrocephalus

Question 42

excessive accumulation of fluid in the brain

Answer 42

Hydrocephalus