Term
| The precerebellar nuclei of the reticular formation project to the? |
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Definition
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Term
| Raphe nuclei provide what kind of input and where? Modulates? |
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Definition
| Seritonergic input to brain and spinal cord with modulation of sensory input and consciousness. |
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Term
| Central nuclear group of the reticular formation gives rise to what tract and what other reticular system? |
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Definition
| Gives rise to the reticulospinal tract and the reticular arousal system. |
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Term
| The lateral parvocellular zone coordinates what? |
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Definition
| Coordinates motor/sensory signals for things such as chewing and swallowing. |
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Term
| Respiratory control zones of the reticular formation contain what substructures? |
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Definition
| parabrachial nuclei, superficial medullary neurons and dorsal and ventral respiratory neuronal groups. |
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Term
| Where does precerebellar nuclei receive its afferents from? |
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Definition
| wide area of cortex containing highly intergrated sensory input that then projects to the cerebellum |
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Term
| where do the raphe nuclei lie within the spinal cord? What NT is used? |
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Definition
| extend from the medulla to the midbrain and located near the midline (raphe). Serotonin is the NT. Used for motor and sensory partes |
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Term
| What are the divisions of the raphe nucleus? Implications? |
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Definition
| divided by which way the axons go. Some go rostrally to the brain and some caudally to the spinal cord. Certain drugs affect certain parts |
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Term
| What are the two raphe nuclei in the medulla? |
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Definition
| the raphe nucleus magnus and raphe nucleus pallidus |
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Term
| Where do the neurons of the medullary raphe (magnus and pallidus) project? |
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Definition
| brainstem and spinal cord to affect motor and sensory. |
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Term
| are projections of the magnus bilateral, unilateral, ipsilateral, or contralateral? |
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Definition
| bilateral in the dorsal funiculus of spinal cord. |
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Term
| If you stimulate the raphe nucleus magnus, what effect do you see? |
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Definition
| analgesic w/o loss of tactile sense. |
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Term
| Considering stimulatio of raphe magnus results in analgesia, what superior structure is it going to communicate with? |
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Definition
| central (periaqueductal) gray in the midbrain. |
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Term
| what NT is used by the periaqueductal gray for pain modulation? |
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Definition
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Term
| enkephalins are used by pain modulating neurons originating in the central gray. What other substance is similar and can bind the same receptors? |
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Definition
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Term
| what autonomic functions is the raphe nucleus magnus related to? |
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Definition
| provides preganglionic automonic fibers to the DMN of X, solitary, Spinal 5 for GVE. |
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Term
| what part of the nuclei of the raphe are the magnus and pallidus parts? |
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Definition
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Term
| The raphe nucleus pallidus performs what function and projections travel where? |
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Definition
| It is located inferior to the magnus and provides motor modulation which travels in the anterior funiculus. |
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Term
| the ascending portions of the nucleus raphe come from what areas of the brain? |
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Definition
| prefrontal cortex, interpeduncular nucleus, and VTA |
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Term
| where do the projections of the ascending nuclei raphe go? |
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Definition
| go to wide areas of the cortex, thalamus, limbics. Pretty much everywhere. |
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Term
| The widespread projections of the raphe nuclei (ascending) use what NT? |
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Definition
| Serotonin. This is why SSRI's are very effective in treatment of Serotonin disorders |
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Term
| What are the primary functions of the central nuclear group? |
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Definition
| related to motor activities, sensory and activation of brainstem and cortex. |
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Term
| the motor related part of the central nuclear group give rise to what tract? |
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Definition
| medullary and pontine reticulospinal tracts. |
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Term
| what controls the central nuclear groups motor function? |
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Definition
| motor cortex, premotor area, cerebellum, superior colliculus and spinal cord. |
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Term
| what is the main output of the central nuclear group? |
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Definition
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Term
| in the brainstem, the medial reticulospinal tract is known as the ? |
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Definition
| pontine reticulospinal tract |
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Term
| in the brainstem, the lateral reticulospinal tract is called the ? |
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Definition
| medullary reticulospinal tract. |
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Term
| What does the lateral reticulospinal (medullary) tract do? |
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Definition
| descends bilaterally to spinal cord and inhibits spinal motor neurons and reflexes. Responsible for atonia in REM sleep. |
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Term
| the pontine reticulospinal tract does what? |
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Definition
| descend ipsilaterally and is excitatory to the proximal limb and postural muscles. |
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Term
| what part of the central nuclear group has to do with eye movement? |
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Definition
Paramedial Pontine Reticular Formation
PPRF |
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Term
| What does the PPRF coordinate? |
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Definition
| lateral and vertical conjugate gaze and more copmlex eye movements. |
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Term
| Where are the sensory receiving nuclei of the central nuclear group? |
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Definition
| just lateral to the motor |
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Term
| where do the efferents of the central nuclei project rostrally and via what route? |
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Definition
| project ventrally through the CTT to the intralaminar nuclei of the thalamus, zona incerta, and substantia inominata (to broad cortex) |
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Term
| what are the two important things carried by the CTT and which is more important? |
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Definition
| taste and reticular projects conveying sensory innervation. The later is more important. |
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Term
| whithout the sensory portions of the central nuclear group, what will the patient show? |
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Definition
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