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GenekristinaDeocampo
Wk7NervousSystem
| Question | Answer |
|---|---|
| 1. What neuron structure is associated with the sensory functions? | Unipolar neurons |
| 2. What are the cluster of neuron cell bodies located within the central nervous system called? | Nuclei |
| 3. What is required for an action potential to begin at the axon hillock region? | the membrane potential must reach threshold, allowing voltage-gated Na+ channels to open. |
| 4. What phase can a neuron send another action potential only if the stimulus is extra strong? | Relative refractory period |
| 5. Which ion rushes into the neuron during depolarization of an action potential? | Sodium (Na+) |
| 6. What term describes the jumping of action potentials from one node of fancier to another in myelinated neuron? | Saltatory conduction |
| 7. What kind of neurotransmitter naturally reduces the sensation of pain in the body? | Enkephalins |
| 8. True or False: A sensory neuron, interneuron, and a motor neuron must communicate to produce a reflex response in order for a a reflex arc to occur. | True |
| 9. Which membrane proteins maintains the resting membrane potential by transporting sodium and potassium ions? | The sodium-potassium pump which moves 3 Na+ out and 2 K+ in using ATP. |
| 10. What is the nervous system code for the strength of a stimulus if action potentials are all or none? | By changing the frequency of action potentials, not their size or strength. |
Created by:
Inahmarie7