Cerebellum comes from latin word that means little

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“Cerebellum” comes from Latin word that means “little brain”Literally means little brainIt looks like a little brain that’s shoved at the back of your larger brainCritical to the coordination of movements and physical balanceNote that the initiation of muscle movements (moving right hand, etc.) actually comes from some higher order structures in the forebrainMore about coordination and control of movementInvolved in things like balancePlays key role in organizing sensory information that guides these movementsCerebellum is more about the coordination of movementsOne of the areas of the brain that is depressed or affected by alcoholWhen somebody drinks we see a lack of balance Ex. roadside sobriety test might have you touch your nose while walking along a lineSomeone who has been drinking might have difficulty with this because their cerebellum is depressed by alcohol (affected by alcohol) Motor control becomes extremely challenging to do if your cerebellum has been affected by alcohol
It can be a sign that you were drinking“I’m not drunk but my cerebellum is” → motor coordination or controlMedulla→ coordinates heart rate, circulation, respirationSecond bump in the brainstemLower part of brainstem Not reticular formation, little partInvolved in heart rate, circulation, breathing, digestion, sneezing, swallowingLife sustaining functions“Without me medulla, me die”Reticular formation→ regulates sleep, wakefulness, and arousalBundle of nuclei or neuronsFibrous track going up spinal cord to up the brainstem and into the midbrainReticular formation is involved in sleep, wakefulness, arousalRuns technically from hindbrain into the midbrainSevere damage to reticular formation would put you in comaMelatonin, for example, acts on the reticular formation to help regulate sleep cycles (among other areas of the brain)Take melatonin when can’t sleep or to minimize the effects of jet lagAnesthesia causes reduced activity in this part of the brainRelated to consciousness “Regulating sleep and wakefulness”Pons→ relays information from cerebellum to the rest of the brainBridge to cerebellumAbove medullaPons translates literally to bridgeBridge of fibers that connects the brain to the cerebellumRelays information from the cerebellum to the rest of the brainArgues that pons has role in dreaming although research shows that it is somewhat controversialWe do see that if you destroy someone’s pons completely, they don’t experience REM (rapid eye movement) sleepWhich is thought to be predominantly the time in sleep when you are dreaming would be during REM sleepWe find that even if you destroy the pons people still do report dreams so it’s not like where dreams are formed a 100% but it is thought to play some role in dreaming“Bridge to the cerebellum”Bridge across a pond (P0 NDS)Reticular formation and the pons are connected areas; they run right beside each other

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