Saltatory conduction and Myelination | Baamboozle - Baamboozle

English 12 Public

Nervous system

Study Slideshow

(True or False) Depolarization does not occur in myelin sheath

True

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Movement of an action potential along a myelinated axon in which the action potential "jumps" from one node of Ranvier to the next is called as___

Saltatory conduction

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Action potentials are only generated if the potential differences reach value aroun -55mV. This value is called as____

threshold potential

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In resting potential, neurons have more _________ on the outside of the cell membrane.

Na+ (sodium)

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A potential when the inner axon becomes positive is called as _____; it happened because of ___ ions influx

depolarization; Na+

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A potential when the inner axon becomes really negative with the potential below resting is called as _____; it happened because of ___ ions efflux

hyperpolarization; K+

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At which point on the diagram does depolarisation of the axon occur?

B

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What stage of action potential does point C on the diagram show?

Repolarization

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What is the name and function of structure D from the diagram?

Myelin sheath; increase the speed of signal transmission

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What is the name and function of structure A from the diagram?

Dendrites; receive stimuli

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(True or False) Along unmyelinated and myeliated neurons action potentials go along the axon

False

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At what stages do Potassium (K+) Channels open?

Repolarization

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