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Surface Anatomy BS
Barb test part 1 neuro II
| Question | Answer |
|---|---|
| Contains important reflex center associated with control of respiration & the cardiovascular system & with control of consciousness | Brainstem |
| Why are CN 3 & 12 nuclei important? Where are they located? | |
| Point where the central canal opens into the 4th ventricle | obexWhat |
| What makes CSF? Where is it located? | Choroid plexus In the 4th ventricle |
| What is the CBT a part of? What does it supply? | CST CN nuclei |
| What is on each side of the ventral median fissure | pyramids |
| Where does the cortical tract run? | in the pyramids |
| What separates the pyramids from the olives | Ventrolateral sulcus |
| Where is CN XII (hypoglossal) located? | Ventrolateral sulcus |
| What nerves emerge through the dorsolateral sulcus? | CN IX CN X CN XI |
| What is located between the ventral and dorsal lateral sulcus? What does it hold? | Olive olivary nuclei |
| Where is the clava? What could you think of it as? | fasciculus gracilius Gracilie tubercle |
| Where do synapses occur in the DC system? | Cuneate tubercle |
| What is the dorsal motor nucleus of the Vagus CN X called? | Vagal Trigone |
| Hypoglossal nucleus name? | Hypoglossal Trigone |
| What are 3 foramina in the Dorsal view of BS? What escapes from these? | 2-Foramina of Luschka (lateral) 1-Foramen of Magendie (midline) CSF |
| Connecting & crossing nn fibers of the R & L cerebral hemispheres. Use it to get to & from the medial cerebellar peduncle> | The Bridge |
| Where is the Basal Artery located? | Basal Sulcus |
| What 3 nns emerege from the groove b/w the pons and medulla? | CN VI abducens CN VII facial CN VIII vestibulocochlear |
| Brachium Pontis | Middle cerebellar peduncles (arm of the pons) |
| What is a big place for acoustic neuromas? Why here? | Cerebellopontine angle BC the vestibular and cochlear nns lie here. |
| What emerges btwn the vestibularcochlear & abducens nn? | CN VII Facial |
| Where does the vestibulocochlear nn exit? | junction btwn the medulla and pons |
| Where is the Trigeminal CN V located? | Anterolateral surface of the pons |
| What is located on the floor of the 4th ventricle in the pontine part? | Facial colliculus |
| Colliculus (tubercle) means: little hill What creates this hill? | Part of the Facial nn wraps around the abducens nucleus and that make the bump |
| What makes the wall of the 4th ventricle? | superior cerebellar peduncles |
| brachia conjunctiva What is it? | Superior cerebellar peduncle |
| Brachium pontis | middle cerebellar peduncles |
| What is the Roof of the pons made of? | Cerebellar vermis Anterior medullary vellum |
| the midbrain contain two lateral halves called what? What is the anterior? Posterior? | Cerebral peduncles Crus cerebri Tegmentum |
| What is located in the inferior cerebral peduncle? | Interpeduncular fossa |
| What emerges from the Interpeduncular fossa and wraps around the crus cerebra? | CN III oculomotor |
| Corpora quadrigemina Center for What? | superior colliculi (visual reflexes) |
| Inferior Colliculi is a center for what? | Lower auditory Centers |
| The visual and auditory center act as way stations for what? | Different sensory pathways |
| What is the only nn that comes from post and wraps to the anterior? | Trochlear CN IV |
| The floor for the 4th ventricles, caudal part is formed by what? | Dorsal surface of the medulla |
| The floor of the 4th ventricle , rostral part if formed by the what? | dorsal pons |
| Surface Lanmarks for the medulla for the 4th ventricle is? | Posterior median fissure Hypoglossal Trigone Vagal Trigone |
| Surface Landmarks of the pons for the 4th ventricle are? | Facial-colliculus (most are bumps) |
| What forms the Roof of the 4th ventricle? | 1. Superior Cerebellar Peduncle Joined together by: a. Anterior medullary Velum b. Cerebellar Vermis |
| What are the wall formed from? | Superior Cerebellar peduncle Brachia Conjunctiva Clava Cuneate Tubercle |
| What are the 4 levels internal structures at the medulla? | Decussation of pyramids Decussation of lemnisci Olives Just inferior to the pons |
| Internal structures of the spinal cord to the BS? | Corticospinal tracts- Dorsal Column Spinothalmic tracts |
| Corticospinal tract : where does it cross | Pyramidal crossing in the caudal medulla Ipsalateral |
| Dorsal Column: | Internal arcuate fibers: ssny decussation or of the fasciculus gracillis & cuneatus to the medial lemniscus Contralateral |
| Spinothalmic Tract Anterior Lateral | stay on same side and do not cross Anterior: touch and pressure Lateral: pain and temperature |
Created by:
klkoester
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