Ventricles (Quiz 4) Flashcards
What are the glia of the CNS?
-astrocytes
-oligodendrocytes
-microglia
-ependymal cells
Which glial cells line the ventricular system?
ependymal cells
T/F: each region of the CNS contains a portion of the ventricular system
true
There are ____ ventricles from rostral to caudal
4
Each lateral (L/R) ventricle communicates with the 3rd ventricle by an _________________ on either side of the median plane
interventricular foramen (also called Monro)
The 3rd ventricle communicates with the 4th ventricle by way of the….
cerebral aqueduct (also called aqueduct of sylvius)
The 4th ventricle becomes continuous with the central canal of the medulla and spinal cord and opens by means of apertures into the….
subarachnoid space
Where are the lateral ventricles located?
L/R cerebral hemispheres
What are the 5 parts of the lateral ventricle?
1) anterior/frontal horn (located in frontal lobe, anterior to the interventricular foramen)
2) body (in frontal and parietal lobe, extending posteriorly to the region of the splenium of the corpus callosum)
3) inferior/temporal horn (located in temporal lobe)
4) posterior/occipital horn (located in parietal and occipital lobes)
5) atrium/trigone (junction of splenium of where the body and the posterior+ inferior horns meet)
Where is the 3rd ventricle found?
between the thalami
Where is the 4th ventricle found?
between cerebellum and brainstem
What shape is the lateral ventricle?
C shape
The caudate nucleus is a part of what ventricle?
lateral ventricle (caudate nucleus is related to basal nuclei/striatum)
The head of the caudate nucleus forms the ________ wall of the anterior horn of lateral ventricle. The caudate’s smaller body forms most of the lateral wall of the body of the ventricle. The tail of the caudate lies in the roof of the ________ horn
lateral, inferior
As the caudate nucleus becomes smaller, the __________ becomes larger and forms the floor of the body of the lateral ventricle
thalamus
The body of the corpus callosum forms the _____ of the anterior horn and the body of the lateral ventricle
roof
The _______________ is a membrane that forms the medial wall of the body and anterior horn of the lateral ventricle.
septum pellucidum
The _____________ forms most of the floor and medial wall of the inferior horn of the lateral ventricle
hippocampus
The 3rd ventricle occupies most of the midline region of the….
diencephalon