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Physiology Practice Test: Synaptic Transmission and Neural Integration
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Synaptic transmission is the process by which one neuron communicates with another. Information is passed down the axon of the neuron as an electrical impulse known as action potential. Once the action potential reaches the end of the axon it needs to be transferred to another neuron or tissue.
 

Related Test: Physiology Practice Test: Nerve Cells and Electrical Signaling

Physiology Practice Test: Synaptic Transmission and Neural Integration
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25 Questions

1. Presynaptic modulation involves a neurotransmitter from the axon terminal of one neuron affecting the membrane potential of an axon terminal from another neuron on which the first has synapsed (axoaxonic synapse).
2. Synaptic potentials are produced at what type of synapse?
3. The influx of calcium into the axon terminal of a chemical synapse is responsible for which of the following?
4. In the absence of active transport of chloride, membrane potential will determine the concentration of chloride ions across a neuronʹs plasma membrane.
5. In which region of the brain does histamine function as a neurotransmitter?
6. The similarity in structure between glutamate and GABA are indicative of the similarity in their function.
7. The opening of ion channels that is stimulated by the binding of a neurotransmitter to its receptor on a neighboring neuron, and the subsequent movement of ions across that membrane, describes the development of which of the following?
8. The most common mechanism for producing a fast EPSP involves which of the following?
9. Once initiated, excitatory postsynaptic potentials last for hours, especially if a fast receptor is activated.
10. Convergence in neurophysiology refers to which of the following?
11. Most EPSPs are at least 10 mV in magnitude at the point of synaptic communication.
12. Two or more graded potentials originating from a different synapse on the same neuron at approximately the same time will cause spatial summation.
13. In the absence of an active chloride transporter in the plasma membrane, chloride acts to ________ membrane potential by resisting any change in membrane potential.
14. Neural integration occurs at a neuronʹs cell body.
15. What type of synapse occurs between an axon terminal of one neuron and the cell body of another neuron?
16. Most neurotransmitters are synthesized in the cytosol and actively transported into synaptic vesicles.
17. Adenosine is degraded by nucleotidases.
18. The final integration of postsynaptic potentials that determines whether an action potential is generated occurs within what region of a neuron?
19. As the amplitude of the excitatory postsynaptic potential increases above threshold, the time between each action potential will ________, thereby increasing the ________ of the action potentials.
20. Which of the following best describes presynaptic facilitation?
21. The synaptic delay is caused by the time required for which step of neurotransmitter release?
22. The synthesis of acetylcholine involves an enzyme called ________, which is present within the cytosol and is responsible for converting ________ into acetylcholine.
23. Which of the following chemicals is NOT a known neurotransmitter?
24. Which of the following is a biogenic amine that is NOT classified as a catecholamine?
25. Most neurotransmitters are synthesized in what region of a neuron?

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