Bain解剖课件

1、the human brainthe central nervous system额 叶顶叶顶叶brainstemn“hindbrainnthe oldest part of the brainnsurvival functionsa relay stationcrossover of axonsheartbeat and breathingband of fibersarousalvoluntary movementsubcortical regions: limbic systemsensory-motor stripshomunculus: little mancommunication

2、 centerchoroid plexusesfigure 12.22aembryonic development of the spinal cordndevelops from caudal portion of neural tubefigure 12.26embryonic development of the spinal cordnby week 6, there are two clusters of neuroblasts:nalar plate will become interneuronsnbasal plate will become motor neuronsnneu

3、ral crest cells form the dorsal root gangliafigure 12.26cross-sectional anatomy of the spinal cordnanterior median fissure separates anterior funiculinposterior median sulcus divides posterior funiculifigure 12.27agray matter and spinal rootsfigure 12.27bgray matter: organizationndorsal half sensory

4、 roots and ganglianventral half motor rootsndorsal and ventral roots fuse laterally to form spinal nerves figure 12.28gray matter: organizationnfour zones are evident within the gray matter somatic sensory (ss), visceral sensory (vs), visceral motor (vm), and somatic motor (sm)figure 12.28white matt

5、er: pathway generalizationsfigure 12.29physical features related to languagespeech “puppet master”syntax & inflectionalfunctional morphologylanguage comprehensionmental lexiconbundle of nerve fiberscommunication between b & w arcuate fasciculusconverts visual stimuli into auditory and vice-versacarries out brocas directionsreceives visual