ORGANIZATION OF THE NERVOUS SYSTEM BRAIN SPINAL CORD CENTRAL NERVOUS SYSTEM (CNS) PERIPHERAL NERVOUS SYSTEM AFFERENT NERVES EFFERENT NERVES EXTERO- RECEPTORS INTERO- RECEPTORS SOMATIC AUTONOMIC EFFECTOR ORGANS SKELETAL MUSCLES SMOOTH AND CARDIAC MUSCLES AND GLANDS www.freelivedoctor.com
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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