The cerebellum and the brainstem Flashcards
(37 cards)
What are the components of the brainstem
Medulla oblongata, pons, midbrain (mesencephalon)
What is the location of the cerebellum
On top of the fourth ventricle
The medulla oblongata has 2 parts name them
The closed caudal part and the open cranial part that forms part of the roof of the fourth ventricle
The brain stem and the cerebellum lie in ?
The posterior fossa, which is delimited by transverse occipital fissure till the dorsal sellae and the posterior part of the petrous portion of the temporal bone
The neurocranium is divided into two portion, by what structure and into which compartements
By the tentorium of the cerebellum, into the supratentorial and infratentorial compartement
The infratentorial compartment consist of ? The supra consists of?
Cerebellum and brainstem, the cerebral hemispheres and diencephalon
Where does the tentorium attach
From the transverse occipital fissure to the petrous portion of the temporal bone till the clinoid process of the sphenoid bone
What is the incisura tentori
It allows the brainstem to continue with the diencephalon
What is the tonsila
It the part of the cerebellum that could herniate into the firemen magnum this would be called a tonsilla herniation
The supratentorial compartment I’d divided into 2 structures By?
The great cerebral falx
The great cerebral falx and the tentorium cerebellum are innervated by what nerve
The ophthalmic division of the trigeminus
The greater wing of the sphenoid are innervated by
The maxillary division of the trigeminus V2
The temporal bone is innervated by?
The mandibular branch of the trigeminus V3
The infratentorial compartment is innervated by
The upper cervical spinal nerves
Name the meninges of the brain and a difference here from the spinal chord
The pia mater, the archnoid, the dura mater. There is no subarachnoid space and the dura is divided into the endosteal layer and the meningeal layer. There is no epidural space
What are pacchions granulations
They are areas where the arachnoid can form evaginations that protude into the venous sinus. This allows drainage of the CSF
The walls of the venus sinus are made of
The dura mater, as they are between the dura mater
Name the venous sinus’
The transverse sinus, the great sinus, the sigmoid sinus, the superior and inferior petrous sinus, the cavernous sinus, the superior and inferior saggital sinus
Detail the cerebellar falx
Is a narrow layer of dura, they separate the 2 cerebellar hemispheres and attach onto the occipital bone
Where are the meningeal arteries
Embedded in the endosteum, the largest is the middle meningeal artery and they pass through the inner surface of the parietal and temporal bone
Go to slides for images and labelling of cerebellum
Please
Where is the chordoid plexus formed?
At the level of the Tele coroidea
The Tele coroidea is made of
Ependymal cells covered by pia mater
The vessels of the chordoid plexus are structurally?
They are fenestrated so that fluid can pass through the ependymal cells into the CSF
