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30 Cards in this Set

  • Front
  • Back
Central Nervous System (CNS)
Includes brain and spinal cord, processes information
Peripheral Nervous System (PNS)
Includes rest of the nervous system tissue
Nerve
Bundle of neurons surrounded by connective tissue
Stimulus
Environmental change that triggers a response
Sensory Receptors
Specialized cells which detect most stimuli
Sensory Neurons
Detect some stimuli such as pain
Interneurons
Neurons in the CNS whcih interpret information
Motor Neurons
Carries away response from CNS
Reflex
Response that is rapid and automatic
Dendrites
Receive signals and carry them toward the cell body
Axon
Carries the signals away from the cell body and toward other cells
Myelin Sheath
Thick coat of material which cover axons
Nodes
Uncovered spaces
Resting Potential
Inside of the nerve cell is negative in electrical chare compared to the outside
Deplorization
Inside of the cell becomes positive compared to the outside
Threshold
Neuron stimulation at a certain level
Action Potential
Stonger deplorization
Synapse
Place where one neuron meets another
Synaptic Cleft
A tiny space between the neurons in a chemical synapse where the action potential is changed
Neurotransmitters
Molecules that make up the chemical signal
Stomatic Nervous System
Carries signals from the CNS to skeletal muscles
Autonomic Nervous System
Carries signals from the CNS to organs and glands
Sympathetic Division
Increases level of activity in the body (in Automic Nervous System)
Parasympathetic Divison
Calms the body and returns it to regular functions
Cerebrum
Largest and most complex part of brain
Corpus Callosum
Thick band of nerve fibers which connect the two hemispheres
Cerebral Cortex
Outside part of the cerebrum
Cerebellum
Cooridnates body movements
Brainstem
Filters all the sensory and motor information traveling to and from the brain
Thalamus
Filters information traveling to and from the cerebral cortex