Central Nervous System & Peripheral Nervous System (Grade 12 NSC Matric Life Sciences): Flashcards
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Function of the nervous system
Function of the nervous system
Body's control centre responding to environment changes
Two main structural divisions of nervous system
Two main structural divisions of nervous system
Central nervous system (CNS) and peripheral nervous system (PNS)
Components of the CNS
Components of the CNS
Brain and spinal cord
Three ways the brain is protected
Three ways the brain is protected
Skull (cranium), meninges (membranes), cerebrospinal fluid
Brain's ability to heal when damaged
Brain's ability to heal when damaged
Limited ability to heal
Function of the spinal cord
Function of the spinal cord
Carries messages up to brain and down from brain
Two functional divisions of PNS
Two functional divisions of PNS
Somatic nervous system and autonomic nervous system
Somatic nervous system controls
Somatic nervous system controls
Voluntary actions (conscious control)
Autonomic nervous system controls
Autonomic nervous system controls
Involuntary actions (automatic/reflex)
Sympathetic & parasympathetic system relationship
Sympathetic & parasympathetic system relationship
Antagonistic (opposite effects on same organs)