3. Functional Organization of the Nervous System Flashcards
What is the sensory function of the nervous system and what portion of the nervous system carries it out?
receiving information; peripheral nervous system
What is the integrative function of the nervous system and what portion of the nervous system carries it out?
processing information; central nervous system
What is the motor function of the nervous system and what portion of the nervous system carries it out?
acting on the information; peripheral nervous system
What are motor neurons?
neurons that carry information from the nervous system towards organs which can act on the information
What are the two types of effectors?
muscles and glands
What are efferent neurons?
neurons that carry information away from the CNS and innervate effectors
What are afferent/sensory neurons?
carry information towards the CNS
What is a reflex?
direct motor response to a sensory input which occurs without conscious thought
What is a monosynaptic reflex arc?
reflex involving only two neurons an one synapse
What is an inhibitory interneuron?
short neuron which forms an inhibitory synapse with a motor neuron
What is reciprocal inhibition?
concurrent relaxation of one muscle and contraction of another
What are the two divisions of the PNS?
somatic
autonomic
What is the somatic division of the PNS?
conscious sensation and deliberate, voluntary material
What is the autonomic divsion of the PNS?
involuntary processes such as digestion, metabolism, circulation, and perspiration
What are the two subdivisions of the autonomic division?
sympathetic
parasympathetic
