divisions of the nervous system Flashcards
what is the central nervous system?
controls behaviour and regulates body’s physiological processes
what does the central nervous system involve?
brain and spinal cord
what periphal nervous system
relay nerve impulses from central nervous system to the rest of the body and from body back to the CNS
two parts of the periphal nervous system
autonomic nervous system
somatic nervous system
what is the autonomic nervous system
regulates involuntary actions like breathing
what are the two parts of the autonomic nervous system
sympathetic
parasympathetic
what is the somatic nervous system
12 pairs of cranail nerves and 31 pairs of spinal nerves
both have sensory and motor neurones
also involved with reflex action without involvement of CNS
what is the sympathetic nervous system
uses neurotransmitter noradrenaline which has stimulating effects
what is parasympathetic
uses acetylcholine which has inhibiting effects
