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| these vesicles are demarcated by 3 brain flexures: |
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| midbrain, pontine, and cervical |
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| what part demarcates the midbrain region in hte brainstem |
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| midbrain flexure (aka cephalic) |
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| what is at the junction of the hindbrain and the spinal cord? |
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| what are derivatives of the telelcephalon? |
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| cerebral hemispheres, limbic lobe and basil ganglia |
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| what are derivatives of the diencephalon? |
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| thalamus adn hypothalamus |
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| what are derivatives of the mesencephalic vesicle |
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| metencephalon further develops into: |
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| the myelencephalon becomes: |
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| what consists of hte cerebral hemispheres and makes up the largest part of the brain? |
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| longitudinal fissure is also called: |
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| central sulcus also called: |
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| what of both hemispheres are shared and integrated by way of the corpus callosum |
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| memories, experiences, and actions |
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| what is the small tube-shaped midbrain canal that connects the 3rd adn 4th ventricles? |
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| cerebral aqueduct of sylviua |
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spinal cord: white matter
What starts in spinal cord and goes to thalamus-largely sensory |
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| what is anterior and lateral spinothalamic tracts-diffuse touch, pain and temp |
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| Is lateral spinal cord- travels from spinal cord to cerebellum |
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| unconscious proprioception |
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| ascending fibers of fasciculi gracilis on teh back in the sensory. ascending fiebres discriminate touch pressure adn position of lower half of the body |
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| motor-starts in cortex and goes to spinal cord... motor ascending (anterior and ventral portions |
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| lateral corticospinal fibers |
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| _____ is f.g and f.c fibers-both traveling up the spinal cord |
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| ____ both 2nd order neurons for pain and temp. (2nd synapse for pain and temp as it travels up the body) |
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| Thoracic region 1-Lumbar level 3; and contributes to spinal cerebellar-sensory unconsciouness |
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what is front and center; decussation of pyramidal fibers(motor) and crossing over corticospinal tract
-becomes more lateral after decussaion
-lateral corticospinal tract in spinal cord |
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| _____ is where lateral to f.c and carries sensory; ascending for pain and temp. for face |
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| spinal trigeminal nucleus adn tract |
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| what diffuses distribution, sprinkled throughout caudal medulla; more CENTRALLY LOCATED-Sleep wakefulness & consciousness cycles; shuts down brain to recover; medial to trigeminal nucleus |
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part of the caudal medulla:
_____ enters at caudal medulla; ascend ipsilaterally in dorsal leminiscus |
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| fasciculi gracilis & cuneatus |
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| _____ 1 primary terminate/ synapse; 1st order synapses in sensory tract |
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| ____ 1st primary terminate/synapse |
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| _____ internal arcuate fibers: point of decussation |
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| _____ discriminative touch for upper and lower body; fc/fg decussated info to thalamus |
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| ____ is in the medulla; inferior lowest peduncle; ipsilateral unsconscious proprioception from lower and middle body to cerebellum |
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| inferior cerebelllar peduncle |
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| _____ where the reticular limbic area formation regulating somatic adn limbic functions |
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| _____ just below central gray; point for exit for hypoglossal nerve: all tongue muscles except palatal glossal |
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| _______ is inferior to hypoglassal nucleus; cervical spinal cord to brainstem (where they join) |
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| medial longitudinal fasciculus |
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| medial longitudinal fasciculus is very crucial to _______; head-eye coordination; |
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| ______ posterior to pyramids (carries motor) |
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| inferior olivary nucleus relays infor to ___________; relaying proprioceptive information |
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MID-MEDULLA:
___________ is decussated sensory info |
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| ____ is motor; undecussted b/c above where crosses |
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| ______ sensory for the face pain and temp. |
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| spinal trigeminal nucleus tract |
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| __________ is more scattered; forma core area in medulla |
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| _________ posterior to the pyramids |
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| inferior olivary nucleus- gives input from ________ & ____________; olivocerebellar decussate & project contralaterally to the _____ |
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| spino-olivary formation and reticular formation; inferior cerebellar peduncle |
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| __________- lateral dorsal medulla (outside toward back) pathway that connects cerebellum; connects brainstem to cerebellum |
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| inferior cerebellar peduncle |
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| ______ is important structure for us as SLPs; btw inferior cerebellar peduncle 7 reticular formation |
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| nucleus ambigus- is the motor nucleus for cranial nerves _, _, _; important for us b/c carrying alot of nerve fibers crucial to speech |
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| ___ still visible bigger adn more developed |
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| principle inferior olivary nucleus |
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| dorsal b/c is it behind medulla (aka restiform body) |
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| inferior cerebellar peduncle |
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| longitudinal still present;sensory; vision & vestibular-medial |
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| carries motor;undecussated info |
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| cochlear & vestibular (crosses over to pons); above the restiform body; dorsolateral medulla back and to the side; receives projections from inner ear |
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| cranial nerve VIII nuclei |
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| medial to the cochlear nucleus and cranial nerve 9 |
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