Chapter 5 - Biological Foundations
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Dendrite | Receive impulses from other nerve cells
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| Soma | Contains the genetic instructions for the function of the cell
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| Axon | Carries the cell's impulse through its length
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| Terminal | Spreads the cell's impulse out to reach other neurons
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| Axon Hillock | Joins the soma and axon to collect the impulses before sending one down the cell
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| Schwann Cell/ Myelin Sheath | Surrounds some neurons to increase how efficiently it can carry an impulse
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| Action Potential | Electrical impulse that tells the cell to communicate with another neuron
Caused by the flow of negative and positive ions in and outof the neuron
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| Depolarization | Stimulus causes Sodium ions flood into the cell, reducing the resting potential
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| Action Potential | http://people.eku.edu/ritchisong/301notes2.htm
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| Absolute Refractory Period | During an action potential, No second AP is able to be produced no matter how strong the stimulus
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| Relative Refractory Period | Another AP can be produced only if the stimulus is greater than the threshold stimulus
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| Synapse | Point of impulse transmission between neurons
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| Excitatory Neurotransmitters | Neurotransmitters that make the membrane potential less negative - stimulate the postysynaptic membrane
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| Inhibitory Neurotransmitters | Neurotransmitters that make the membrane potential more negative - inhibit the transmission of an impulse
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| Temporal Summation | Transmission of an impulse by rapid stimulation of one or more presynaptic neurons
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| Spatial summation | Transmission of an impulse by simultaneous or nearly simultaneous stimulation of two or more presynaptic neurons
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| CONTINUE WITH THE NERVOUS SYSTEM |
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