Brainstem And Cerebellum Flashcards
What are the two structures of the ventral midbrain?
The cerebral peduncle
The interpeduncular fossa
What CN comes off the ventral midbrain?
CN III occularmotor
What four CNs come off the pons?
Abducens (center)
Trigeminal both sensory and motor (lateral with the next two)
Facial
Vestibularcochlear
What are the two structures of the ventral pons?
Basilar pons
Middle cerebellar peduncle
What is the outcropping on the ventral medulla called?
The pyramid
What is the structure on the medulla below the pyramid?
The olive
What is a decussation?
A crossing
What is the area caudal to the pyramids of the medulla?
The pyramid decussation
What crosses at the pyramid decussation?
Motor fibers of the corticospinal tract and the corticobulbar tract
What is the olive of the medulla divided into?
The pre and post-olivary sulcus
What nerves come off the medulla and in what order?
Hypoglossal (from the pyramid)
Glossopharygeal
Vagus
Accessory
The last three come off the olive (pre?)
What sits at the top of the brainstem from a dorsal view?
The caudate nucleus
What does the cerebral aqueduct pass through?
Midbrain
What lies under the caudate nucleus?
The thalamus
What lies under the third ventricle and between the superior colliculus of the dorsal midbrain?
The pineal gland
What CN comes off of the dorsal side of the midbrain?
The trochlear nerve
What nerve comes off of the dorsal side of the midbrain?
Trochlear nerve IV
What two important tracts run through the cerebral peduncle?
Corticospinal
Corticobulbar
What does the quadrigeminal plate include?
The superior and inferior colliculi
At what point does the cerebellum attach and by what?
At the pons by the superior, middle, and inferior peduncle
What is the name of the colliculus located on the back of the pons?
The facial colliculi
Where is the vestibular trigone (area)?
On the dorsal side of the pons
What are the two foramen on the dorsal side of the medulla?
Lateral and medial foramen
What are the two trigones present on the medulla solely?
Hypoglossyl
Vaal
