8.2 Divisions Of The Nervous System Flashcards
2 major division of the nervous sytem
Central Nervous System
Peripheral Nervous System
Components of the CNS
brain and spinal cord
Components of the PNS
All the nervous tissue outside the CNS (Nerves and ganglia)
2 functional subdivisions of PNS
sensory division
motor division
also called afferent division which conducts action potentials from sensory receptor to the CNS
sensory division
Neurons that transmit action potentials from the periphery to the CNS
sensory neurons
also called efferent division which conducts action potentials from the CNS to effector organs
motor division
neurons that transmit action potentials from the CNS toward the periphery
motor neurons
Subdivisons in the motor division
Somatic Nervous System
Autonomic Nervous System
divison that transmits action potentials from the CNS to skeletal muscles
Somatic Nervous System
Transmit action potentials from the CNS to cardiac muscle, smooth muscle, and glands
Autonomic Nervous System
Subdivisons of the Autonomic Nervous System
Sympathetic Nervous System
Parasympathetic nervous system
unique subdivision of the peripheral nervous system that has both sensory and motor neurons contained wholly within the digestive tract and can function without input from the CNS or other parts of the PNS
Enteric nervous system
