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9.THE SOMATIC AND AUTONOMIC NERVOUS SYSTEMS (SOMATIC SUBDIVISION…
9.THE SOMATIC AND AUTONOMIC NERVOUS SYSTEMS
SOMATIC SUBDIVISION
Perception
external stimuli
motor activity
recives information
sensory organs
sends
somatic effectors
contract
voluntary
involuntary
skeletal muscles
AUTONOMIC SUBDIVISION
regulates the function
organs
involuntary maner
systems
receive information
internal organs
critical conditions
internal receptors
involuntary messages
central nervous system
hypothalamus
medulla oblongata
spinal cord
autonomic effectors
regulated
heart rate
respiratory rate
pupil dilation
Autonomic division
Parasympathetic brach
actions
relaxation
tranquilliti
low energy expenditure
Sympathetic brach
situations
stress
increased energy demand
heightened awareness
antagonistic in nature