What is it? nervous system composition: 2 cell types neurons glia.

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Presentation transcript:

what is it? nervous system composition: 2 cell types neurons glia

parts of neuron - function - structure

neural communication electrical within, chemical between

vesicles, exocytosis, & binding

epinephrine (E) & norepinephrine (NE) neurotransmitters glutamate (+) vs GABA (-) acetylcholine (Ach) dopamine (DA) serotonin (5-HT) about receptor subtypes…

inactivating NTs reuptake enzymatic breakdown diffusion

effects after binding IONOTROPIC METABOTROPIC - cascade of events requiring energy - turn on/off genes - alters structure of the cell - fast

nervous system central nervous system peripheral nervous system brain spinal cord somatic NS autonomicNS sensory nerves motor nerves sympathetic NS parasympathetic NS

cortex brain stem subcortical structures brain anatomy

forebrain, midbrain, hindbrain during neurodevelopment when fully developed

subdivisions of brain

ventricles central canalventricles

cerebrospinal fluid choroid plexus

hindbrain medulla RAS & raphe vital functions reflexes

hindbrain pons RAS & raphe REM & paralysis decussation locus coeruleus

hindbrain cerebellum coordination Integrates intention for movement w/ balance, motor, senses learning

hindbrain & midbrain

midbrain tegmentum

forebrain’s diencephalon

forebrain’s telencephalon limbic system Amygdala Hippocampus Cingulate gyrus Hypothalamus?

forebrain’s telencephalon basal ganglia

cortical lobes

executive functions planning & organizing working memory (internally-guided) sequencing set-shifting vs perseveration abstract thinking inhibition maturation of PFC cells

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