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8 terms

Schematic levels of organization in nervous system

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1.Central Nervous System (CNS)
structure: brain and spinal cord
function: integrative and control centers
2.Peripheral Nervous System (PNS)
structure: cranial nerves and spinal nerves
function: communicate lines between CNS and rest of body
3a.Sensory (afferent) division
structure: somatic and visceral sensory nerve fibers
function: conducts impulses from receptors to CNS
3b.Motor (efferent) division
structure: motor nerve fibers
function: conducts impulses from CNS to effectors (muscles and glands)
4a.Somatic nervous system
structure: somatic motor (voluntary)
function: conducts impulses from CNS to skeletal muscles
4b.Autonomic nervous system (ANS)
structure: visceral motor (involuntary)
function: conducts impulses from CNS to cardiac muscles, smooth muscles, and glands
5a.Sympathetic division
function: mobilizes body systems during activity
5b.Parasympathetic division
functions: conserves energy; promotes house-keeping functions during rest