10006926
Descripción
Test por Michael Jardine, actualizado hace más de 1 año
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Creado por Michael Jardine
hace más de 6 años
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Pregunta 1
Pregunta
The Ventricular Action Potential duration is:
Respuesta
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~300 ms; ~100X longer than APs in nerves and skeletal muscle.
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~300 ms; roughly equal to APs in nerves and skeletal muscle.
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~300 ms; ~100X shorter than APs in nerves and skeletal muscle.
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3-4 ms; ~100X longer than APs in nerves and skeletal muscle.
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3-4 ms; roughly equal to APs in nerves and skeletal muscle.
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3-4 ms; ~100X shorter than APs in nerves and skeletal muscle.
Pregunta 2
Pregunta
What is ICa?
Respuesta
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Intracellular [Ca]
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Inside [Ca]
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Inward [Ca] current
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Intracellular [Ca], measured relative to extracellular [Ca]
Pregunta 3
Pregunta
There are three main functions of ICa. These are?
(select all that apply)
Respuesta
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Provides inward current, which helps maintain long AP.
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Provides a small fraction of the Ca, which triggers contraction.
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Triggers Ca release from the SR (through the process of CICR - Calcium-Induced Calcium Release).
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Helps marble meat properly.
Pregunta 4
Pregunta
Do Potassium channels contribute to the long action potential?
Respuesta
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Yes
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No
Pregunta 5
Pregunta
Potassium channels are largely responsible for which of the following?
(not necessarily their only role, though)
Respuesta
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Depolarisation
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Repolarisation
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[none of the above]
Pregunta 6
Pregunta
K[ATP] channels ("ATP" should be subscript) are:
Respuesta
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Potassium-induced ATP channels.
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ATP-induced Potassium channels.
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Lack-of-Potassium -induced ATP channels.
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Lack-of-ATP -induced Potassium channels.
Pregunta 7
Pregunta
Ischaemia is [blank_start]____[blank_end] of blood flow
Respuesta
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restriction
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an excess
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