Term
| Once triggered the action potential will travel ____ |
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Definition
| over the entire surface of the cell |
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Term
| Triggering the action potential will cause ____ channels to open and the RMP will become ___ |
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Definition
|
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Term
| Sodium entering the cell will cause the the membrane to |
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Definition
|
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Term
| When the peak of the action potential is reached ___ close and ___ open |
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Definition
|
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Term
| During the period of depolarization the membrane will |
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Definition
| not respond to any further stimulus no matter how large |
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Term
| The period of depolarization is referred to as |
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Definition
| absolute refractory period |
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Term
| as the membrane repolarizes ___ to ___ makes it more difficult to ___ |
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Definition
| high permeability to K will make it more difficult to depolarize |
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Term
| The period of membrane repolarization is referred to |
|
Definition
| relative refractory period |
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Term
| What can elicit a response in the relative refractory period? |
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Definition
|
|
Term
| when do the ion channels return to their resting state? |
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Definition
| after a brief period of hyper polarization |
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Term
| What law does action potential of the membrane follow |
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Definition
|
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Term
| The membrane polarity changes from ___ to ___ in neurons |
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Definition
|
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Term
| what is the current of the cell propagated from? |
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Definition
| the cell body of the neuron to the end of the axon and vice versa |
|
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Term
| what prevents an axonal membrane from depolarization |
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Definition
|
|
Term
| what are the only areas to depolarize? |
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Definition
|
|
Term
| In the nodes of ranvier the depolarization allows for faster conduction via the |
|
Definition
| saltatory conduction (nerves jump from node to node) |
|
|
Term
| what are 2 things that saltitory conduction do? |
|
Definition
| increase speed of the conduction and conserve energy |
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Term
| This type of nerve ending is found in the epidermis and is for crude touch and pressure |
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Definition
|
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Term
| This type of nerve ending is found deep cubcutaneous tissue for vibration |
|
Definition
| Pacinian corpuscles (dorsal column) |
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Term
| This type of nerve ending is found in the dermal papillae for two point discrimination (fine touch) |
|
Definition
| Meissners corpuscles (dorsal column) |
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|
Term
| This type of nerve ending is found deep subcutaneous tissue for joint position sense found in the dorsal column |
|
Definition
| Ruffini Endings (deepest) (dorsal column) |
|
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Term
| This type of nerve ending is found in the dermis and the cornea for light touch |
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Definition
|
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Term
| This type of nerve ending is found in the epidermis and the dermis for slow pain and temperature |
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Definition
| (spinothalamic tract) Naked Nerve Endings |
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Term
| This type of nerve ending is found in tendons to detect load or tension |
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Definition
|
|
Term
| This type of nerve ending is found in muscles and detect changes in the length of the muscle |
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Definition
|
|
Term
| If Sodium leaks into the cell continuously from a decrease in calcium what will you have |
|
Definition
|
|
Term
| what controls the Na+ gates? |
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Definition
|
|
Term
| if there is an increase in calcium there will be |
|
Definition
| no firing of the action potential |
|
|
Term
| At what point is it impossible for the nerve to fire |
|
Definition
| absolute refractory period |
|
|
Term
| What brings the 3Na+ cells out of the cell and the 2K+ into the cell to bring it back to the resting membrane potential |
|
Definition
|
|
Term
| what is the minimum current for action potential? |
|
Definition
|
|
Term
| what is the time using 2x rheobase for action potential |
|
Definition
|
|
Term
| what makes the cell harder to fire when Cl rushes in causing the K+ to leak out |
|
Definition
| Inhibitory post synaptic potential |
|
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Term
| What is the inhibitory neurotransmitter of the spine |
|
Definition
|
|
Term
| What is the inhibitory neurotransmitter of the brain |
|
Definition
|
|
Term
| When the action potential is generated what does it open |
|
Definition
| Voltage gated calcium channels on the synaptic end of the neuron |
|
|
Term
| Calcium influx activates ___ which causes the synaptic vessels to fuse with the presynaptic membrane |
|
Definition
|
|
Term
| what is the only fiber that is not myelinated and has the smallest diameter |
|
Definition
|
|
Term
| if someone gets hurt and the next day it goes numb what nerve ending is it coming from? |
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Definition
|
|
Term
| what type of pain is fast pressure pain |
|
Definition
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