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A&P I CNS-PNS
Stack #20513
Question | Answer |
---|---|
the brain has ___ pairs of cranial nerves | 12 |
the spinal cord has ___ pairs of spinal nerves | 31 |
job of sensory receptors | detect internal and external stimuli |
integrative function | processing of info |
sensory (affeent) carry sensory info. toward | brain and spinal cord |
motor (efferent) function | carry motor info. from brain/ spinal to respective nerves |
CNS | central nervous system- brain &spinal cord |
PNS | everything but CNS |
SNS | somatic nervous system- transmits signal to skeletal muscle only |
ANS | autonomic nervous system- |
3 types o f receptors | visceral (ANS), skeletal (SNS), special sensors |
nervous tissue consists of | neurons and neuroglia |
neurons | excitable cells, don't multiply or divide, found in CNS |