Term
| where are most of the organelles in a neuron located? |
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Definition
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Term
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Definition
| cluster of neuron cell bodies |
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Definition
| sensory input, integration, motor output |
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Definition
| located entirely within the central nervous system and integrate data and relay signals to either others of their kind or to motor neurons |
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Term
| which type of axons have the fastest conducting rates in the nervous system? |
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Definition
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Definition
| muscle cells or gland cells which perform the body's responses |
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Term
| what type of energy is membrane potential |
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Definition
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Definition
| site of communication b/w one neuron and another |
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Definition
| the most important proteins that help in maintaining the resting membrane potential of a cell |
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Definition
| convey signals from interneurons to effector cells |
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Term
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Definition
| supporting cells located in the peripheral nervous system |
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Term
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Definition
| any factor that causes a nerve signal to be generated |
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Term
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Definition
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Definition
| a nerve signal that carries information along an axon or a dendrite |
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Term
| do glial cells outnumber neurons in the nervous system? |
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Definition
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Term
| where do nerve signals jump from? |
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Definition
| from Schwann cell to Schwann cell in the PNS |
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Term
| what is the purpose of the myelin sheath? |
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Definition
| to speed up the conduction of nerve signals |
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Term
| where is the concentration of sodium greater? inside or outside the cell? |
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Definition
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Term
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Definition
| the tiny gap between the neuron terminals of a chemical synapse |
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Term
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Definition
a chemical substance (such as DOPAMINE or ACFETYLCHOLINEA) that transmits nerve signals across a synapse
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Term
| where do neurotransmitters bind to? |
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Definition
| the receptor of the receiving neuron's plasma membrane |
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Term
| what kind of channels do EXCITATORY neurotransmitters usually open channels when receiving a neuron? |
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Definition
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Term
| what kind of channels do INHIBITORY neurotransmitters usually open channels when receiving a neuron? |
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Definition
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Term
| neurotransmittes are released from the sending neuron by the process of ____ |
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Definition
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Term
| Parkinson's disease is associated with a lack of _____ |
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Definition
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Term
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Definition
| 1. electrical; 2. chemical |
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Term
| how does the body ensure that the effect of the neurotransmitter is brief? |
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Definition
| they are broken down by enzymes or transported back to the sending cell |
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Term
| type of synapse in the heart? |
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Definition
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Term
| are some neurons use gases as neurotransmitters? |
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Definition
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Term
| do action potentials generally stop when they reach the end of an axon? |
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Definition
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Term
| an excess of _________ is linked with schitzophrenia |
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Definition
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Term
| does stronger stimuli make a more intense voltage change in a neuron? |
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Definition
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Term
| is the effect of Viagara is due to a type of neurotransmitter? |
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Definition
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Term
| can Acetylcholine be excitatory in some cases and inhibitory in other cases? |
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Definition
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Term
| are action potentials are the same regardless of the strength of the stimulus that creates it? |
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Definition
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Term
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Definition
| a neuron extension that sends signals to other neurons |
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Term
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Definition
| a disease which breaks down myelin sheaths and causes a decrease in nerve signal conduction |
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Term
| the membrane potential can change if we change... |
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Definition
| the permeability of a neuron's membrane |
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Term
| the intensity of a stimulus changes the _____ |
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Definition
| frequency of an action potential |
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Term
| what kinds of molecules are many neurotransmitters? |
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Definition
| small, nitrogen-containing ones |
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Term
| may receiving neuron's receive both excitatory and inhibitory signals at the same time? |
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Definition
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Term
| is it possible for some neurotransmitters to be simply amino acids? |
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Definition
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Term
| excitatory neurotransmitters |
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Definition
| increase the likelihood of developing an action potential |
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Term
| inhibitory neurotransmitter |
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Definition
| decreases the likelihood of developing an action potential |
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Term
| what causes the membrane potential to rise? |
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Definition
| a stimulus causing the opening of some voltage-gated channels |
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Term
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Definition
| the electrical difference across a membrane |
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Term
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Definition
| neuron extensions that receive information from other neurons |
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Term
| does a typical axon have thousands of synaptic terminals |
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Definition
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Term
| is the concentration of potassium is greater inside of the cell than it is outside of the cell |
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Definition
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