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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
Function and location of Gigantocellular reticular nucleus?
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1) in upper medulla
2) ipsilateral projects to spine for muscle tone and gaiting 3) projections to sacral neurons inhibit penila/clitoral eretions 4) NPT: nocturnal penile tumescence, waves of inhibition for erection during sleep |
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Function and location of Parvicelllular reticular nucleus?
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1) lateral to gigantocellular nuc.
2) extends from upper medulla to motor trigeminal nuc. 3) projections to cranial nerve motor nuc. for licking, chewing, swallowing, vomiting |
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Function and location of Parabrachial reticular nucleus
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1) near sup. cerebellar ped.
2) involved in taste, feeding, drinking 3) spit/swallow switch 4) contains pneumotaxic center: turn off inhalation neurons, prevents overfilling |
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What are the respiration centers of the brainstem?
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1) Pneumotaxic center: in parabrachial reticular nucleus
2) Dorsal Respiratory groups: in nucleus solitarius, inspiration neurons, rhythmic breathing during quiet respiration 3) ventral Respiratory group: in nucleus ambiguus, inspiration/expiration in non-quiet respiration (excercise) |
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Role of ascending reticular formation AKA reticular activating system?
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1) responsible for sleep-wake cycle, various levels of alertness
2) projects to mid-line group of thalamus, which goes to cortex |
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Role of descending reticular formation?
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1) receives input from hypothalamus
2) involved with autonomic nervous system 3) role in motor movement: projections carry involuntary motor impulses from extrapyramidal tracts |
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Location and function of Barrington nucleus?
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1) Located medial to Locus Ceruleus
2) Micturition center (urinate) |
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Location and function of Pedunculopontine nucleus?
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1) upper pons and lower midbrain
2) atonia during REM 3) imp. in reticular activating center |
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Location and function of cuneiform and subcuneiform nucleus
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1) located in midbrain
2) role in selective attention |
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Location and role of pontine reticular nucleus
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1) located in medial pons
2) ipsilateral proj. to spinal cord concerned with muscle tone 3) Contains PPRF, ORAL PONTINE RETICULAR and CAUDAL PONTINE RETICULAR: involved with REM sleep |
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Role and location of Paramedian pontine reticular formation (PPRF)?
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1) located in medial pons, pontine reticular nucleus
2) lateral (horizontal) gaze center |
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Role and location of Rostral Interstitial Nucleus of the Medial Longitudinal Fasciculus (riMLF)?
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1) located in rostral portion of MLF in midbrain
2) Vertical gaze center |
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Role and location of Raphe nuclei?
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1) located in medial medulla, pons, and midbrain
2) involved with pain inhibition and sleep cycles 3) Nucleus Raphe Magnus: sends fibers to interneurons toposterior horn to inhibit pain |
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Locus Ceruleus role and location?
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1) not considered reticular nucleus
2) bilateral structure in post. rostral pons and caudal midbrain 3) diffuse connections, 250,00 synapses 4) regulation of attention, arousal, sleep/wake cycle, learning, memory , anxiety, pain, mood 5) NT: Norepinephrine, (can make cx more responsive to salient sensory stimuli) - increase brain responsiveness, make sensory and motor systems more efficient |
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What are the afferents and efferents for Inferior colliculus?
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Afferents:
1) cochlear nuclei 2) trapezoid body 3) superior olivary nucleus |
Efferents:
1) medial Geniculate 2) cervical spinal cord 3) vertical/horizontal gaze center |
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What are the afferents and efferents for Superior Colliculus
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Afferents:
1) Retina 2) Motor Cortex |
Efferents:
1) Lateral geniculate 2) spinal cord 3) horizontal/vertical gaze center |