Site of release cns synapses ans synapses

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Site of Release:CNS synapsesANS synapsesNeuromuscular junctionsEffect:Excitatory (muscle contraction)Norepinephrine (NE)Site of Release:Selected CNS synapsesSome ANS synapsesEffect:ExcitatorySerotoninSite of Release:CNS synapsesEffect:Generally inhibitory (mood, anxiety, sleep induction)
9DopamineSite of Release:Selected CNS synapsesSome ANS synapsesEffect:Excitatory or inhibitoryGamma-Aminobutyric acid (GABA)Site of Release:CNS synapsesEffect:InhibitoryGlycineSite of Release:CNS synapsesEffect:InhibitoryEndorphinsSite of Release:Descending pain pathwaysEffect:InhibitoryREFLEXESIt is an involuntary reaction in response to a stimulus applied to theperiphery and transmitted to the CNSReflexes allow a person to react to stimuli more quickly than is possible ifconscious thought is involvedReflex ArcThe neural pathway by which a reflex occursIt is the basic functional unit of the nervous system:the smallest, simplest pathway capable of receiving stimuli and yielding aresponse5 Basic components1.Sensory receptor2.Sensory neuron3.Interneuron (located between & communicating with 2 other neurons)4.Motor neuron5.Effector organ (muscle or gland)Neural PathwaysConverging Pathway2 or more neurons synapse with (converging on) the same neuronIt allows information transmitted in more than one neuronal pathway toconverge into one pathway
10Diverging PathwayAxon from one neuron divides (diverges) and synapseswith more thanone other neuronsThis allows information transmitted in one neural pathway to diverge intoto or more pathwaysDivision of Human Nervous SystemAtounomic or Sympathetic Nervous Systemmany of its activities are "autonomous" or "self-regulating" which go oneven when a person is asleep or unconsciousit consist of 2 antagonistic but integrated systemA. Sympathetic Systemit is active in emotionactivating the organism in response to pain, anger, or fear thru thecontrolled secretion of epinephrine (adrenalin)B. Parasympathetic Systemaffects one organ at a timeit tends to act in quiescent activityit maintains the function that conserve and protect the bodily reserves(maintaining homeostasis)The function of these systems can also be described in terms of competitionand cooperation.The Cerebro-Spinal Systemthe brain and the spinal cord is protected by 3 meninges:Dura materthe outer membrane lining the inner surface of the skull forming aprotective covering of the brainArachnoid
11the thin membrane beneath the dura mater which secretes a serous fluidkeeping the inner the surface moistPia materthe membrane dipping to the convulotions, fissures, and the interior andis rich in blood supplyThe Central Nervous SystemThe BrainCerebrumThe largest part of the brainIt is divided into left and right hemisphere by a longitudinal fissureGyri (gyrus)The numerous folds which generally increase the surface area of thecortexSulci (sulcus)Intervening groovesThe Lobes of the BrainFrontal LobeIt is important in the control of:voluntary motor functionsmotivationaggression

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Term
Spring
Professor
elbramirez
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