Chapter 3
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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| Neurons | Cells in the nervous system that communicate with one another
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| Cell Body ( Soma) | The part of the neuron that coordinates information processing tasks and keep the cell alive
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| Dendrite | The part of a neuron that receives information from other neurons and relays it to the cell body
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| Axon | The part of a neuron that carries information to other neurons, muscles or glands
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| Myelin Sheath | An insulating layer of fatty material
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| Glial Cells | Support cells found in nervous system
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| Synapse | The junction or region between the axon of one neuron and the dendrites or cell body of another.
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| Sensory Nuerons | Receive information from the external world and convey this information to the brain via the spinal cord
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| Motor Neurons | Carry signals from the spinal cord to the muscles to produce movement
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| Interneurons | Connect sensory neurons, motor neurons, and other interneurons
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| Resting Potential | The difference in electric charge between the inside and outside of a neurons's cell membrane
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| Action Potential | An electric signal that is conducted along a neuron's axon to a synapse
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| Refractory Period | The time following an action potential during which a new action potential cannot be initiated
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| Terminal Buttons | Knob like structures that branch out from an axon
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| Neurotransmitter | Chemicals that transmit information across the synapse to a receiving neuron's dendrites
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| Receptors | Parts of the cell membrane that receive the neurotransmitter and initiate or prevent a new electrical signal
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| Acetylcholine (ACh) | A neurotransmitter involved in a number of functions, including voluntary motor control
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| Dopamine | A neurotransmitter that regulates motor behavior, motivation, pleasure, and emotional arousal
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| Glutamate | The major excitatory neurotransmitter in the brain
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| GABA (gamma - aminobutyric acid) | The primary inhibitory neurotransmitter in the brain
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| Norepinephrine | A neurotransmitter that is particularly involved in states of vigilance or heightened awareness of dangers in the environment
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| Serotonin | A neurotransmitter that is involved in the regulation of sleep and wakefulness, eating, and aggressive behavior
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| Endorphins | Chemicals that act within the pain pathway of the brain and emotion center of the brain
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| Agonists | Drugs that increase the action of a neurotransmitter
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| Antagonists | Drugs that block the function of a neurotransmitter
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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