Brainstem Overview Flashcards
1
Q
3 parts of the brainstem from bottom to top
A
Medulla
Pons
Midbrain
2
Q
where are the pyramids located
A
Longitudinal masses on ventral medusa that are created by corticospinal axon bundles that descend from ipsilat brain (80% cross at decussion)
3
Q
What emerges from pre olivary groove
A
Roots of hypoglossal n (CN12)
4
Q
What emerges from retro olivary groove (top to bottom)
A
Glossopharangeal (CN9)
Vagus (CN10)
Spinal acessory n (CN11) crnial and spinal roots
5
Q
Where is the ponto medulary sulcus and what emerges froom it (med to lat)
A
sup border of medula
Abducens (CN6)
Facial (CN7)
Vestibulochochlear (CN8)
6
Q
what CN emerges from the ventral pons
A
Trigeminal N (CN5)
7
Q
What CN emerges from ventral midbrain
A
Occulomotor n
8
Q
What CN emerges from post midbran
A
Trochlear n
