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Nervous System: Action Potential

Riki M 10 preguntas 5,0 (3 valoraciones)

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Preguntas del test (10)

  1. 1Resting Membrane Potential is the difference across plasma membranes expressed in millivolts
    1. AVerdadero
    2. BFalso
  2. 2Resting Membrane Potential is determined by..
    1. APermeability to Na+ and K+
    2. BPermeability to Na+ and Ca+
    3. CPermeability to K+ and Ca+
  3. 3When k+ concentration inside the cell is high, the electrical gradient will force K+ into the cell because the electrical gradient is stronger than the chemical gradient.
    1. AVerdadero
    2. BFalso
  4. 4When Na+ concentration inside the cell is low, the cell will
    1. AMove Na+ into the cell because of the chemical gradient
    2. BMove Na+ out of the cell because of the electrical gradient
    3. CMove Na+ into the cell because of the electrical gradient
    4. DMove Na+ out of the cell to reach an equilibrium
  5. 5Resting membrane potential is -70mV
    1. AVerdadero
    2. BFalso
  6. 6An Action Potential occurs when a threshold point of -40mV is reached
    1. AVerdadero
    2. BFalso
  7. 7When an action potential begins, [blank_start]depolarisation[blank_end] occurs, causing [blank_start]Na+[blank_end] voltage gates to open and allow Na+ to flow [blank_start]into[blank_end] the cell.
    1. Adepolarisation
    2. BRepolarisation
    3. CNa+
    4. DK+
    5. Einto
    6. Fout
  8. 8During the repolarisation phase of an action potential..
    1. ANa+ voltage gates close at -30mV (ICF)
    2. BNa+ voltage gates open
    3. CK+ gates opening, allowing K+ to flow out the cell
    4. DK+ gates close at -90mV (ICF)
    5. EK+ gates open at -90mV(ICF)
  9. 9The electrical signal (action potential) is sent along the axon of a nerve cell
    1. AVerdadero
    2. BFalso
  10. 10What happens to the electrical signal (action potential) when it enters the axon terminal?
    1. AIt enters the synaptic cleft as neurotransmitters
    2. Bit stays in the axon terminal
    3. CIt changes to a chemical signal
    4. DCauses an influx of Ca+
    5. EIt continues as an electrical gradient

Información

Descripción
Bachelors Degree Biology Test sobre Nervous System: Action Potential , creado por Riki M el 09/11/2015.
Autor
Riki M
Idioma
English
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305
Valoración
5,0 de 5 · 3 valoraciones
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