Term
| What are the 3 divisions of the brain stem |
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Definition
|
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Term
| what is the most caudal division of the brain stem |
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Definition
|
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Term
| what is the most rostral division of the brain stem |
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Definition
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Term
| what structures of the brain stem are continuous with the spinal cord |
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Definition
| dorso/posterolateral sulcus, dorsal/posterior intermediate sulcus, dorsal/posterior median sulcus |
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Term
| What does the dorsal median sulcus end at |
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Definition
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Term
| the point of the obex is a landmark for what |
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Definition
| point at which the walls of the 4th ventricle meet |
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Term
| immediately to either side of the dorsal median sulcus is a ridge known as what |
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Definition
| tuberculum gracilis or gracilis tubercle |
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Term
| bump created by an underlying nucleus, or cell bodies of sensory neurons associated with fasciculus gracilis |
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Definition
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Term
| the tuberculum gracilis is a bump created by an underlying nucleus, or cell bodies of sensory neurons associated with what |
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Definition
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Term
| what lays lateral to the gracilis tubercle |
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Definition
| tuberculum cuneatus/cuneate tubercle |
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Term
| the cuneate tubercle has a _____ extension, the underlying fasciculus cuneatus |
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Definition
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Term
| the cuneate tubercle has a caudal extension, the underlying ________ _______ |
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Definition
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Term
| The cuneate and gracilie fasciculi are separated by the dorsal intermediate sulcus in what regions of the spinal cord |
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Definition
| cervical and upper thoracic |
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Term
| the cuneate and gracile fasciuli are separated by what in the cervical and upper thoracic spine |
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Definition
| dorsal intermediate sulcus |
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Term
| what is found lateral to the fasciculus cuneatus |
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Definition
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Term
| what is lateral to the dorsolateral sulcus |
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Definition
| tuberculum cinerum/trigeminal eminence |
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Term
| Tuberculum cinereum is the position for what |
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Definition
| one nucelus of CN V (Trigeminal) |
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Term
| What are the most prominent structures of the pons/midbrain area? |
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Definition
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Term
| What are the cerebellar peduncles |
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Definition
| 3 bundles of nerve fibers |
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Term
| superior cerebellar peduncles aka |
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Definition
|
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Term
| where do the superior cerebellar peduncles extend from |
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Definition
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Term
| where do the superior cerebellar penduncles extend to |
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Definition
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Term
| what is suspended between the two limbs of the superior cerebellar peduncles |
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Definition
| superior medullary vellum |
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Term
| middle cerebellar peduncle aka |
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Definition
|
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Term
| where does the middle cerebellar peduncle extend from |
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Definition
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Term
| where does the middle cerebellar peduncle extend to |
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Definition
| reaches dorsally on either side into the cerebellar hemispheres |
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Term
| what forms the lateral walls of the 4th ventricle |
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Definition
| inferior cerebellar peduncles |
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Term
| where are the inferior cerebellar peduncles located |
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Definition
| junction between pons and medulla |
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Term
| inferior cerebellar peduncles aka |
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Definition
|
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Term
| the floor of the 4th ventricle is bisected longitudinally by what |
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Definition
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Term
| lateral to the median sulcus is what |
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Definition
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Term
| the median eminence includes what |
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Definition
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Term
| what is the facial colliculus created by |
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Definition
| fibers of the facial nerve passing dorsal to the nucleus of the abducens nerve |
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Term
| the facial colliculus is created by fibers of the facial nerve passing dorsal to what |
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Definition
| nucleus of the abducens nerve |
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Term
| in the midbrain there are 4 small colliculi, collectively known as what |
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Definition
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Term
| the rostral pair of the corpora quadregemina are known as what |
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Definition
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Term
| the caudal pair of the corpora quadregemina are known as what |
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Definition
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Term
| from the lateral surface of the inferior colliculus, a ridge caused by a fiber bundle, is called what |
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Definition
| the brachium of the inferior colliculi |
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Term
| the brachium of the inferior colliculus extends how toward the medial geniculate body |
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Definition
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Term
| the brachium of the inferior colliculus extends rostral towards what |
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Definition
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Term
| the brachium of the superior colliculus reaches what |
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Definition
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Term
| brachium of the superior colliculus passes superior to what |
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Definition
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Term
| rostral to the midbrain, are diencephalic structures, what is the fiber bundle called |
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Definition
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Term
| rostral to the midbrain, are diencephalic structures, what is the nucleus called |
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Definition
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Term
| rostral to the midbrain, are diencephalic structures,what is the large caudal nucleus of the thalamus called |
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Definition
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Term
| what diencephalic structures can be better seen from a medial hemispheric view |
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Definition
| stria medullaris thalami, habenula |
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Term
| habenula can be easily confused with what more caudal body/gland |
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Definition
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Term
| what marks the transition from medulla to spinal cord |
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Definition
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Term
| the decussation is the level at which a majority of the fibers in the pyramids cross the midline and enter what |
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Definition
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Term
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Definition
| external structures formed by fibers of the underlying corticospinal tracts, a major descending motor tract |
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Term
| what is the sulcus at the lateral boundary of the pyramids |
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Definition
|
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Term
| what CN nerve roots emerge from the preolivary sulcus |
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Definition
|
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Term
| what is the structure lateral to the preolivary sulcus |
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Definition
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Term
| the prominent bulge of teh Olive is caused by what |
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Definition
| underlying inferior olivary nucleus |
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Term
| what is the lateral boundary of the olive |
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Definition
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Term
| the post olivary sulcus joins what caudal to the olive |
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Definition
|
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Term
| the post olivary sulcus joins the pre olivary sulcus where |
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Definition
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Term
| the post olivary sulcus joins the pre olivary sulcus caudal to the olive and forms what |
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Definition
|
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Term
| what is the prominent bulge above the medulla |
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Definition
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Term
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Definition
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Term
| what is the midline of the basis ponti |
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Definition
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Term
| the ventral junction between diencephalon and midbrain occurs just below what |
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Definition
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Term
| the mamillary bodies are a part of what |
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Definition
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Term
| the ventral part of the midbrain consists of only what structure |
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Definition
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Term
| what is the space cauldal to the mamillary bodies |
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Definition
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Term
| lateral to the mamillary bodies are two large fiber protrusions called what |
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Definition
| Oculomotor nerves (CN III) |
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Term
| CN III nerves leave the brain stem at the venteromedial border of what |
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Definition
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Term
| rostral to the pituitary stalk what nerves meet and partially cross |
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Definition
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Term
| rostral to the pituitary stalk the optic nerves (CN II) meet and partially cross where |
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Definition
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Term
| CN II fibers continue dorsally from the optic chiasm and are collectively known as what |
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Definition
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Term
| what are the 2 parts of the olfactory nerve |
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Definition
| olfactory bulb, olfactory tract |
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Term
| the olfactory tract divides into what 2 parts |
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Definition
| lateral and medial olfactory striae |
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Term
| the olfactory striae form the anterior boundary of what |
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Definition
| anterior perforated substance |
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Term
| the anterior perforated substance is related to what |
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Definition
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Term
| anterior perforated substance has numerous fine holes through which what enters the brain |
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Definition
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Term
| where can the oculomotor nerve be seen emerging from |
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Definition
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Term
| moving from rostral to caudal what 3 CN are most readily seen |
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Definition
| CN I (olfactory), CN II (Optic), CN III (Oculomotor) |
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Term
| what is the only cranial nerve to emerge dorsally |
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Definition
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Term
| CN that emerges between midbrain and pons, just caudal to the inferior colliculus |
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Definition
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Term
| trochlear nerve (CN IV) emerges from what structures |
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Definition
| between pons and midbrain, just caudal to the inferior colliculus |
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Term
| Which division of the trigeminal nerve is larger, motor or sensory? |
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Definition
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Term
| which division of the trigeminal nerve is smaller |
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Definition
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Term
| what is the junction between the medulla and pons called |
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Definition
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Term
| from medial to lateral, what CN emerge from the bulbopontine sulcus |
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Definition
| abducens (CN VI), Facial (CN VII), vestibulocochlear (CN VIII) |
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Term
| What CN emerge from the post olivary sulcus |
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Definition
| glossopharyngeal (CN IX), Vagus (CN X), Spinal Accessory (CN XI) |
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Term
| What CN emerge from the preolivary sulcus |
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Definition
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Term
| The anterior spinal artery is formed from branches of what 2 arteries |
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Definition
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Term
| what are the 2 main arterial systems that supply the brainstem and cerebrum |
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Definition
| verterbrobasilar artery, internal carotid arteries |
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Term
| what are the 3 arteries that provide blood to the rostral spinal cord, brain stem, and cerebrum |
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Definition
| anterior spinal artery, internal carotid aa, vertebral aa |
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Term
| which aa primarily supplies the cerebellum and much of the brainstem |
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Definition
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Term
| the vertebro-basilar system feeds what aa |
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Definition
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Term
| the posterior cerebral aa supplies what |
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Definition
| part of the cerebral cortex, rostral part of the midbrain |
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Term
| part of the cerebral cortex and the rostral part of the midbrain are supplied by what aa |
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Definition
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Term
| the internal carotid aa supply what |
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Definition
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Term
| what supplies the remaining cerebrum and the eye |
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Definition
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Term
| what are other major aa of the brainstem |
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Definition
| posterior communicating aa, middle cerebral aa, anterior cerebral aa, anterior communicating aa |
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Term
| the posterior cerebral aa directly communicate with what |
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Definition
| posterior communicating arteries |
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Term
| the posterior communicating arteries anastomose with what |
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Definition
| internal carotid/middle cerebral artery complex |
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Term
| internal carotid/middle cerebral aa communicates with what (2) |
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Definition
| anterior cerebral aa, anterior communicating aa |
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Term
| anatomical connection between post cerebral aa, post communicating aa, int carotid aa/mid cerebral aa, ant cerebral aa, anterior communicating aa is called what |
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Definition
| cerebral arterial circle of (willis) |
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Term
| cerebral arterial circle of (willis) is made up of what vessels |
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Definition
| post cerebral aa, post communicating aa, int carotid aa/mid cerebral aa, ant cerebral aa, anterior communicating aa |
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Term
| additional arteries branching from the basilar aa include what (3) |
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Definition
| superior cerebellar artery, infeior cerebellar artery, multiple Pontine arteries |
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Term
|
Definition
| paramedian branches of the basilar aa |
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