Nerve Conduction
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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| What two ions are involved in the sodium potassium pump? | 3 sodium ions(Na+)and 2 potassium ions (K+)
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| What is unsed by the ANS to produce the FIght or flight response to stress? | Norepinephrine
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| Dopamine is involved with what disease process and what does if do? | Parkinsons, motor activity, motivation, congnition
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| What neurotansmitter in a inhibitory transmitter? | GABA, inhibitory, influences interneurons within the spinal cord
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| What neurotransmitter is an excitatory transmitter? | Glutamate, is excitatory, facilitates neuronal change during development
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| What are some Neurotransmitters? | Acetylholine, Glutamate, GABA, Dopamine, and Norepinephrine
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| Acetylcholine works with LMN to do what? | To stimulate mm contraction and regulates HR other ANS functions
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| 3 Na+ from inside cell bind to transport protein, then a phosphate group is transferred from ATP to transport protein releasing Na+ ions to where? | OUTSIDE the cell +
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| 2 K+ from outside the cell bind to a transport ion and are released to where? | INSIDE - Active transport
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| When the overall change is 3 out 2 what is the restin cell going to be? | Negative
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| At resting potential what is more inside the cell? | Na+
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| At resting potential what is more outside the cell? | K+
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| Depolarization when poet synaptic neuron receives a stimulus from the presynaptic neuron. What happens to receptors and neuro transmitters? | Receptors catch neurotransmitters which open gated Na+ channels. Na+ rush into the cell causing the inside of the cell to be less neg.
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| Action Potential happens how? | When the stimuls is strong enough to reach the axon hillock
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| What happens to the cell with AP? | The outside of the neuron goes from + to - and the inside goes from - to +
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| What does it mean with the all or none principle when it comes to AP? | An AP will either happen or not, no in between
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| Sub threshold stimulus means what? | The stimulus that was introduced was not strong enough and a AP will not occur
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| Repolarization happens when? | When a neuron is trying to return to its normal resting potential. Downward slope slower
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| When K+ continues to leave the cell thru open K+ channels Na+ channels are closed so no Na+ is leaving. This happens when? | Repolarizaiton the downward slope K+ leaves once Na+ is in
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| What is meant by Absolute Refactory Period? | A period of the AP the neuronis less responsive to other stimuli
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| What is it called when a new action potential cannot be stimulated no matter how strong the stimulus is? | Absolute Refractory Period
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| Once membrans potential hits a certain mV all the Na+ gated channels are closed and K+ gated channels are opened what cannot happen? | A new action potential cannot be stimulated
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| During relative refractory period what happens to the membrane? | Causes membrane potential to be even more - than the rest(below the line)
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| When both Na+ and K+ are closed is called? | Relative Refractory Period
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| How can a super threshold accure? | During Relative Refractory Period it takes more stimuli to bring the neuron to threshold.
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demiller243
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