organisation of cns
TRANSCRIPT
ORGANIZATION OF THE NERVOUS SYSTEM
BRAINSPINAL CORD
CENTRALNERVOUSSYSTEM (CNS)
PERIPHERALNERVOUS SYSTEM
AFFERENT
NERVES
EFFERENT
NERVES
EXTERO-RECEPTORS
INTERO-RECEPTORS
SOMATIC AUTONOMIC
EFFECTORORGANS
SKELETALMUSCLES
SMOOTH AND CARDIAC MUSCLES AND GLANDSwww.freelivedoctor.com
MAINTENANCE AND PROTECTION OF THE CNS
Glial Cells: physical and metabolic support
Skull and Spinal ColumnCerebrospinal fluidBlood-brain barrierBlood supply
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GLIAL CELLS OR NEUROGLIA:
PHYSICAL AND METABOLIC SUPPORT
90% OF CELLS IN BRAINFOUR TYPES: ASTROCYTES,
OLIGODENDROCYTES, EPENDYMAL CELLS, AND MICROGLIA
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Skull and Spinal Column
PROVIDE MECHANICAL SUPPORT
PROTECTS THE NEURAL AND SUPPORTING TISSUE
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CEREBROSPINAL FLUID
DENSITY IS THE SAME AS BRAIN
SHOCK ABSORBER
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Blood-brain barrier
LIMITS ACCESS OF BLOOD MATERIALS TO BRAIN TISSUE
PROTECTS BRAIN FROM FLUCTUATIONS IN BLOOD LEVELS
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STRUCTURE OF THE BRAIN
BRAIN STEM
CEREBELLUM
FOREBRAIN
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THE FOREBRAIN
THE DIENCEPHALON
THE CEREBRUM
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THE DIENCEPHALON
HYPOTHALAMUS
THALAMUS
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THE CEREBRUM
BASAL NUCLEI
CEREBRAL CORTEX
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WHITE AND GRAY
GRAY MATTER - MAINLY CELL BODIES
WHITE MATTER - MYELINATED AXONS
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SUBCORTICAL STRUCTURES
BASAL GANGLIA
THALAMUS
HYPOTHALAMUS
LIMBIC SYSYTEM
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BASAL GANGLIA
PLAY A COMPLEX ROLE IN THE CONTROL OF MOVEMENT
INHIBIT MUSCLE TONE THROUGHOUT BODY
SUPPRESS USELESS OR UNWANTED PATTERNS OF MOVEMENT
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THALAMUS
RELAY STATIONHELP US DIRECT OUR ATTENTIONFILTERS OUT INSIGNIFICANT
SIGNALS
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HYPOTHALAMUS
REGULATES HOMEOSTATIC FUNCTIONS
THIRST AND URINE OUTPUTFOOD INTAKEHORMONE SECRETIONBODY TEMPERATUREAUTONOMIC NERVOUS SYSTEM’S
COORDINATING CENTERwww.freelivedoctor.com
LIMBIC SYSTEM
COMPLEX NETWORK OF FOREBRAIN STRUCTURES
EMOTIONSBASIC SURVIVALSOCIOSEXUAL BEHAVIORMOTIVATIONLEARNING
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BEHAVIOR AND NEUROTRANSMITTERS
NOREPINEPHRINEDOPAMINESEROTONIN
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LEARNING AND MEMORY
SHORT TERM VS LONG TERMWORKING MEMORYASSOCIATIVE VS CONDITIONEDMULTIPLE LOCATIONS
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THE MOTOR CORTEX
SOMATOTOPIC ORGANIZATIONDESCENDING PATHWAYS SENSORY FEEDBACK
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CORTICAL AREAS INVOVED IN MOTOR CONTROL
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SOMATOTOPIC ORGANIZATION OF THE MOTOR CORTEX
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THE SPINAL CORD IN SOMATIC SENSORY FUNCTION
WHITE AND GREY MATTERSEGMENTAL ORGANIZATION
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SEGMENTAL STRUCTURE OF SPINAL NERVES
DERMATOMES
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SPINAL CORD
DORSAL HORN GREY
MATTER
DORSAL
VENTRAL
SPINAL NERVE
DORSALROOTGANGLION
VENTRALHORN
WHITEMATTER
LATERAL
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THE SOMATOSENSORY CORTEX
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SOMATOTOPIC ORGANIZATION OF THE SENSORY CORTEX
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MOTIVATIONAL SYSTEMS
HUNGER
THIRST
SEXUAL BEHAVIOR
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HUNGER
LACK OF
FOOD
REDUCEDAVAILABILITYOF GLUCOSE
CONTRACTIONS OF EMPTYSTOMACH
LOWTRIGLYCERIDELEVELSIN FAT CELLS
GLUCOSE RECEPTORSIN HYPOTHALAMUS
MECHANO-RECEPTORSIN STOMACH
PANCREAS
HUNGER
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THIRST
WATERDEFICIENCY
OSMORECEPTORSIN SUPRAOPTICAND SUPRA-VENTRICULARNUCLEI OFHYPOTHALAMUS
THIRST
ADHSERETIONBY PITUITARY
WATERRETENTION BY KIDNEY
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SEXUAL BEHAVIOR
ANTERIOR HYPOTHALAMUS ORGANIZES RESPONSES TO PHERMONES
OLIFACTORY CUES SENT TO PYRIFORM CORTEX AND AMYGDALA AND INDIRECTLY TO HYPOTHALAMUS
ANDROGENS DETERMINE RELEASE OF LEUTINIZING HORMONE- CONSTANT OR CYCLIC
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LEARNING AND MEMORY
ASSOSCIATIVE VS NONASSOCIATIVE LEARNING
SHORT AND LONG TERM MEMORYNEURONAL PATHWAYSSPLIT BRAIN STUDIESCELLULAR MANIFESTATIONSUSE AND DISUSE
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LOCALIZATION OF LANGUAGE FUNCTIONS
COMPREHENSION
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LATERALITY OF BRAIN FUNCTION
RIGHT AND LEFT BRAIN
GENDER DIFFERENCES
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RIGHT AND LEFT BRAIN
RIGHT HEMISPHERE: SPATIAL ABILITIES
LEFT HEMISPHERE: MUSICAL ABILITY
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GENDER DIFFERENCES
MALES TEND TO EXHIBIT MORE LATERALIZATION OF SPECIFIC TASKS
FEMALES USE BOTH HEMISPHERES MORE SYMMETRICALLY
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ANATOMY OF THE CEREBELLUM
Floculonodular Lobe
Lateral
Zone
Intermediate
Zone
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SOMATIC SENSORY PROJECTIONS ONTO THE CEREBELLAR CORTEX
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THE BASAL GANGLIAwww.freelivedoctor.com
THE FLEXOR WITHDRAWAL REFLEX
PAINFUL STIMULUS DETECTED IPSILATERAL EXTENSORS INHIBITED IPSILATERAL EXTENSORS EXCITEDLIMB IS WITHDRAWN IF INVOLVING ONE FOOT WHILE
STANDING, CONTRALATERAL SIDE EXTENSORS ACTIVATED AND FLEXORS INHIBITED TO SUPPORT GREATER WEIGHT
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FLEXOR WITHDRAWAL REFLEX
STEPON TACK
SENSORYSIGNAL TO SPINE
VIAINTERNEURONS
IPSILATERAL EXTENSORS INHIBITEDIPSILATERAL FLEXORS CONTRACT-LEG LIFTSCONTRALATERAL EXTENSORS CONTRACTCONTRALATERAL FLEXORS INHIBITED- MAINTAIN BALANCE AND SUPPORT WEIGHT
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