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20 Cards in this Set
- Front
- Back
systems within the PNS
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afferent and efferent division
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afferent division
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part of PNS that transmit sensory information to the CNS and modifies conditions inside and outside the body
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efferent division
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division of the PNS that carries commands from the CNS to the body in response to changed conditions and consits of motor functions
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parts of the efferent division
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somatic nervous system and autonomic nervous sysyem
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somatic nervous sysyem
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controls skeletal muscles and responds to external stimuli, resulting in movement
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autonomic nervous system
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controls internal processes such as digestion and heart rate and responds to internal stimuli, controlling the activity of internal organs and glands
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types of autonomic nerves
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parasympathetic nervous system and sympatyhetic nervous sysytem
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parasympathetic nervous system
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begins at the base of the spinal cord and promotes functions that conserve or restore energy by slowing the heart down to stimulate digestive activity
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sympathetic nervous system
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begins along the middle of the spinal cord and prepares organs for stressul situations by speeding up heart rate to stimulate the release of glucose from the liver and inhibiting digestive organs
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spinal cord
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collects and transmit info throughout the body
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four main structures of the brain
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cerebrum, cerebellum, diencephalon, brain stem
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cerebrum
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makes up most of the brain and is involved in conscious thought and memory
- divided into left and right hemispheres, each of which has four lobes |
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lobes of cerebral hemisphere
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frontal, parietal, occipital, and temporal
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corpus callosum
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thick band of axons that connects the two hemispheres of the cerebrum
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cerebellum
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coordinates complex motor patterns
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diencephalon
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relays sensory info to the cerebellum and controls homeostasis
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brain stem
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connects the brain to the spinal cord and is the autonomic center for regulating the heart, lungs, and digestive sysytem
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learning
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an enduring, ususally adaptive change in behavior that results from a specific experience in an individual's life
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memory
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the retention of learned information
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synaptic plasticity
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changes in the nature of the synapse from the molecular basis of learning
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