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9 Cards in this Set
- Front
- Back
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Hydra, sea star, planarian, nematode, clam, squid, and vertebrate
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-nerve net controls contraction and expansion of GVC
-radial nerve, nerve ring -brain, chephalization trend towards clusters of sensory neurons, ventral nerve cord -specialized ganglion, sensory organs and cephalization -lack cephalization but have specialized neural functions -cephalization and higher function capture prey, ganglia -dorsal nerve cord |
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central nervous system
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signals from the brain and spinal cord, spinal cord reflexes independently of the brain
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Peripheral nervous system
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afferent to the brain motor system.
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autonomic nervous system
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parasympathetic-causes opposite responses promoting calming and responding to maintenance
sympathetic-flight or flight arousal |
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somatic nervous system
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movement and locamotion
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enteric division
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network of neurons in digestive tract
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How neurons code different messages with identical action potentials
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same action potentials carry PNS. Motor system carries signals to skeletal muscles voluntary. Autonomic nervous system regulates internal environmental or involuntary manner
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integration of excitatory and inhibitory inputs
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-brings closer to AP depolarization
-lower probability of AP hyper polarization |
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brain divisions
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cerebrum-controls skeletal muscles
cerebellum -motor movements balance helps learning and remembering motor skills dienacephalon- thalamus and main input of sensory info, controls thirst brainstem-coordinates and conducts info. inbetween brain centers |
