13.6 Organisation of the nervous system - Flashcards
what are the 2 structural systems in the nervous system?
central nervous system
peripheral nervous system
what is the CNS?
the brain
the spinal cord
what is the PNS?
all the neurones which connect the CNS to the rest of the body
what are the 2 functional systems in the PNS?
somatic nervous system
autonomic nervous system
what is the somatic nervous system?
the system which is under conscious control
VOLUNTARY ——> skeletal muscle effect
what is the autonomic nervous system?
the system which is under subconscious control
INVOLUNTARY ——> glands, smooth and cardiac muscle
what is the autonomic nervous system split into?
sympathetic
parasympathetic
what is the sympathetic nervous system?
increases heart rate
involves NORADRENALINE
what is the parasympathetic nervous system?
decreases heart rate
involves ACETYLCHOLINE