10006926
Beschreibung
Quiz von Michael Jardine, aktualisiert more than 1 year ago
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Erstellt von Michael Jardine
vor mehr als 7 Jahre
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Frage 1
Frage
The Ventricular Action Potential duration is:
Antworten
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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.
Frage 2
Frage
What is ICa?
Antworten
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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]
Frage 3
Frage
There are three main functions of ICa. These are?
(select all that apply)
Antworten
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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.
Frage 4
Frage
Do Potassium channels contribute to the long action potential?
Antworten
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Yes
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No
Frage 5
Frage
Potassium channels are largely responsible for which of the following?
(not necessarily their only role, though)
Antworten
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Depolarisation
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Repolarisation
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[none of the above]
Frage 6
Frage
K[ATP] channels ("ATP" should be subscript) are:
Antworten
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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.
Frage 7
Frage
Ischaemia is [blank_start]____[blank_end] of blood flow
Antworten
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restriction
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an excess
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