Term
| During resting potential, inside of the cell is about? |
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Definition
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Term
| During the end of depolarization, inside of the cell is about |
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Definition
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Term
| The threshold for the action potential to fire is about |
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Definition
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Term
| Inactivation gate is related to |
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Definition
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Term
| The concentration of ___ is high outside of cell during resting potential |
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Definition
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Term
| Does Sodium Potassium pump need ATP? Yes or no |
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Definition
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Term
| Higher concentration of _____ on outside and lower concentration of _______ inside |
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Definition
| Na outside, sodium inside |
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Term
| Inside is ______ charged and outside is ______ charged. |
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Definition
| inside negatively, postively outside. |
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Term
| What are the 3 reasons for the cause of inside being negative |
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Definition
| 1. protein molecules inside of cells are negatively charged, proteins cant get out its too big. 2. sodium potassium pump, pumping 3 positive out and bringing 2 positive in. More positive ions outside. 3. Leak channels(faciliated diffusion) , more potassium leak channels then sodium. Sodium goes in but sodium potassium pump out. |
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Term
| Which channel can be found majority on the axon hillock? |
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Definition
| sodium voltage sensitive channels |
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Term
| sodium gates have 2 doors, which is _____ on the outside and inside is _____ |
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Definition
| Activation on the outside, inactivation on the inside |
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Term
| There are also potassium sensitive voltage channels. True or false? |
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Definition
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Term
| Concentration gradients exist across the plasma membrane. Specifically, there are ________. |
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Definition
| more potassium ions inside and more sodium ions outside the plasma membrane |
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Term
| The value of the resting membrane potential is ________. |
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Definition
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Term
| The plasma membrane is more permeable to ________. |
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Definition
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Term
| The resting membrane potential depends on each item below, EXCEPT: |
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Definition
| the greater permeability of the membrane to anions rather than cations. |
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Term
| The Na+/K+ pump transports ________. |
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Definition
| Na+ out of and K+ into the cell |
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Term
| If potassium was the only ion moving out |
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Definition
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Term
| sodium gates have 2 doors, which is _____ on the outside and inside is _____ |
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Definition
| Activation on the outside, inactivation on the inside |
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Term
| When does inside of the neuron become positive? |
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Definition
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Term
| The action potential is initiated in the ________. |
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Definition
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Term
| A threshold stimulus immediately ________ |
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Definition
| opens voltage gated sodium channels |
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Term
| Phase 2 of the action potential is known as |
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Definition
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Term
| The membrane potential returns to the resting state due to ________ |
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Definition
| the diffusion of ions through leak channels. |
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Term
| he influx of sodium ions in one segment of an unmyelinated axon initiates the following events, EXCEPT ________ |
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Definition
| .a repolarizing current that brings the adjacent segment to threshold |
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Term
| The lighting effect at the arrow below denotes |
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Definition
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Term
| what is it called when there is nothing happening? |
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Definition
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Term
| which gates does a -55mv fire open up |
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Definition
| activation gate on the voltage sodium sensitive channel |
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Term
| why doesnt sodium go out when the activation gate opens? |
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Definition
| because it goes from high to low concentration |
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Term
| what are the 2 reasons sodium goes in? |
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Definition
| higher concentratiou outside as suppose to inside. 2. outside is positive and inside negative and they attract eachother. |
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Term
| what are the ions togheter called? |
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Definition
| electro chemical gradient |
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Term
| what is another term when sodium rushes in during depolorization? |
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Definition
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Term
| when does potassium voltage sensitive channels start opening up? |
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Definition
| when there is a positive 35 mv fire |
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Term
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Definition
| when the potassium is leaving |
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Term
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Definition
| inactivation gates close temporarily |
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