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BS Surf Anatomy
Brainstem Surface Anatomy- Neuro 2
| Question | Answer |
|---|---|
| The pyramids are immediately ____ to the anterior median fissure | Lateral |
| Lateral to the anterolateral sulcus are the _____ | Olives |
| Rootlets of the ___ exit between the pyramids & the ___ in the ___ sulcus. | Hypoglossal N.; Olive; Anterolateral |
| Rootlets of the _____ (3) cranial nn exit lateral to the ____. | Glossopharyngeal, Vagus, cranial root of Accessory; Olives |
| The gracile nucleus (tubercle) lies immediately ___ to the posteromedian sulcus. | Medial |
| In the floor/tegmentum of the 4th ventricle, immediately ___ to the midline lies the ___ & ___. | Lateral; Vagal triangle; Hypoglossal triangle |
| The two lateral recesses of the medulla are _____ & the medial recess is called the ______. | foramina of Luschka; foramen of Magendie |
| The basis pontis of ______ occupies the entire anterior aspect of the pons | The bridge of the pons |
| The _______ lies in the basal sulcus/groove that extends along the midline of the basis pontis. | Basilar Artery |
| Cranial nerve ____ exits bilaterally from the inferior pontine sulcus at the caudal border of the pons with the medulla. | VI (Abducens N.) |
| The ______ attach the pons to the cerebellum. | Middle Cerebellar Peduncles |
| The _____ (2) nerves emerge from the brainstem in the cerebellopontine area. This niche is formed by what 3 things? | Facial & Vestibulocochlear; Caudal border of middle cerebellar peduncle, Adjoining part of cerebellum, & Upper part of medulla |
| What forms the rostral part of the floor of the 4th ventricle? | Pons |
| The _____ lies lateral to the posterior medial sulcus in the floor of the 4th ventricle. | Facial colliculus (formed by root of facial n. winding around abducens nuclei) |
| In the pons, what structures form the walls of the 4th ventricle? | Superior Cerebellar Peduncle |
| The roof of the 4th ventricle in the pons is formed by what 3 things? | Anterior Medullary velum, Brachia conjunctiva, Cerebellar vermis |
| Inside the midbrain at the midline, is a narrow passage from the 4th to the 3rd ventricle called _______. | the cerebral aqueduct |
| The inferior (caudal) surface of the midbrain is formed by the ____ & the ______. What cranial nerves are associated with this area of the brain? | Cerebral peduncles; Interpeduncular fossa; Optic & Oculomotor nerves |
| The posterior surface is called the ___ or ____ & contains the _____ made up of ______ & _________. | Tectum; Roof; Corpora quadrigemina; Superior & Inferior colliculi |
| The ______ emerges just behind the inferior colliculus. | Trochlear Nerve |
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1190550002
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