lecture9 cns
TRANSCRIPT
THECENTRAL NERVOUS SYSTEM
CNS
DIVISION OF NERVOUS SYSTEM
CENTRAL NERVOUS SYSTEM (CNS) BRAIN
PROENCEPHALON (FOREBRAIN)
TELENCEPHALON DIENCEPHALON
MESENCEPHALON (MIDBRAIN)
RHOMBENCEPHALON (HINDBRAIN)
METENCEPHALON MYELENCEPHALON
SPINAL CORD
PERIPHERIAL NERVOUS SYSTEM (PNS) SOMATIC (SNS)
NERVES GANGLIA PLEXUSES
AUTONOMIC (ANS) NERVES GANGLIA PLEXUSES
BRAIN DIVISION
CEREBRUM
CEREBELLUM
BRAIN STEM DIENCEPHALON MESENCEPHALON PONS MYELENCEPHALON
DEVELOPMENT OFCNS
NEURAL PLATE (17th day)
NEURAL GROOVE neurulation (18-21day)
NEURAL TUBE & CREST (21st day) NEUROPORUS ANTERIOR (25th day) NEUROPORUS POSTERIOR (28th day)
HUMAN EMBRYO
NEURAL PLATE
NEURAL TUBE & CREST
TUBE & CREST
DEVELOPMENT OF CNS
DEVELOPMENT OF CNS
BRAIN DEVELOPMENT
ORIGIN OF THE BRAIN
CEREBRUM-CORTEX
NEOCORTEX (Cerebral hemisheres) 6 layers perception, association, reacting
PALEOCORTEX (Olfactory cortex) 3 layers smell perception, stereotypical
sexual behaviour
ARCHICORTEX (Hippocampus) 2-4 layers learning, memorizing
GENERAL ORGANIZATION OF CNS
GRAY MATTER NEURON BODIES DENDRITES INITIAL SEGMENT OF
AXON (UNMIELINATED) PROTOPLASMATIC AND
FIBROUS ASTROCYTES MICROGLIA CAPILARES
WHITE MATTER MIELINATED AXONS OLIGODENDROCYTES FIBROUS ASTROCYTES MICROGLIA CAPILARES NO ANY NEURON
BODIES!
SCHEDULE OF GRAY&WHITE MATTER
GRAY MATTER
WHITE MATTER
GRAY&WHITE MATTER LOCALISTAION
GRAY CORTEX OF
CEREBRUM AND CEREBELLUM
BASAL NUCLEI, THALMUS, HYPOTHALMUS
HORNS AND GRAY COMISSURES OF SPINAL CORD
WHITE TRACTS FUNICULES OF SPINAL
CORD
TRANSVERSE SECTION OF BRAIN
NEOCORTEX
MOTOR
SENSORY
ASSOCIATON
NEOCORTEX
NEOCORTEX
BRODMANN’S AREAS
AREAS OF BRODMANN
NEOCORTEX
MOLECULAR
OUTER GRANULAR
PYRAMIDAL CELL
INNER GRANULAR
GANGLIONIC
MULTIFORM
CEREBRUM CORTEX LAYERS
PYRAMIDAL CELLS
CEREBELLUM
CEREBELLARCORTEX
MOLECULAR LAYERPURKINJE CELL LAYERGRANULAR LAYER
CEREBELLUM CORTEX
PURKINJE CELL
SPINAL CORD
SPINAL CORD
SPINALCORD
HORNS ANTERIOR LATERAL DORSAL
GRAY COMMISURAFUNICULES ANTERIOR LATERAL POSTERIOR
MENINGES
MENINGES
DURA MATER
ARACHNOID
PIA MATER
CRANIAL MENINGES
CRANIAL MENINGES
SPINAL MENINGES
SPINAL MENINGES
ARACHNOID & PIA MATER
CEREBROSPINAL FLUID
FUCTION
PRODUCTION
FLOW
RESORPTION
COMPOSITION
CHOROID PLEXUS
CSF - SECRETION
CHOROID PLEXUS LATERAL, 3-rd AND
4-th VENTRICULES losse connective tissue
(pia mater) fenestrated capillares
EPENDYMAL CELLS cuboidal / collumnar ion-transporting
CHOROID PLEXUS
CSF
VOLUMEN 135mlDAILY SECRETION 550mlFILS VENTRICLES, CENTRAL CANAL, SUBARACHNOIDAL AND PERIVASCULAR SPACE
FUNCTION ENVELOPES CNS WITH
HYDROSTATIC COAT QUICK REGULATION
OF ICP (INTRACRANIAL PREASURE)
CSF - RESORPTION
ARACHNOID VILLI
VENAS OF PIA MATTER
INTO EPINEURUM OF CRANIAL NERVES
BLOOD-BRAIN BARIER
FUNCTIONAL DEVICE
PREVENTS UNCONTROLED PASSAGE OF SUBSTANCES
PROTECT NEURONS
BBB
ENDOTHELIAL CELLS TIGHT JUNCTIONS ENZYMATIC SYSTEMS
BASAL MEMBRANE
PERIVASCULAR SPACE MACROPGAGES AND
MICROGLIA
PERIVASCULAR GLIA MEMBRANE FOOT-LIKE PROCESSES
OF ASTROCYTES
BBB
ANS
ANS
sANS
pANS
ANS