10317605
Descripción
Test por Michael Jardine, actualizado hace más de 1 año
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Creado por Michael Jardine
hace casi 7 años
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Pregunta 1
Pregunta
Which of the following is NOT a type of Calcium channel?
Respuesta
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G-type
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L-type
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N-type
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T-type
Pregunta 2
Pregunta
An L-type Calcium channel has how many subunits?
(each controlled by a separate gene)
Respuesta
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2
-
3
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4
-
5
-
6
-
7
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8
Pregunta 3
Pregunta
An L-type Calcium channel is highly selective for Calcium, but is also somewhat permeable to Sodium and Potassium.
Respuesta
- True
- False
Pregunta 4
Pregunta
During diastole, the Na/Ca exchanger and the SR Ca pump both move Ca. Which way around?
Respuesta
-
Na/Ca exchanger will pull Ca IN to the myoplasm; the SR Ca pump will pump Ca back INTO the SR.
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Na/Ca exchanger will pull Ca IN to the myoplasm; the SR Ca pump will pump Ca back OUT of the SR.
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Na/Ca exchanger will push Ca OUT from the myoplasm; the SR Ca pump will pump Ca back INTO the SR.
-
Na/Ca exchanger will push Ca OUT from the myoplasm; the SR Ca pump will pump Ca back OUT of the SR.
Pregunta 5
Pregunta
The longitudinal SR contains a high concentrations of proteins acting as an ATP-dependent Ca pump - returning Ca from the myoplasm to the SR lumen (to help terminate contraction).
These proteins are called SERCA.
What does SERCA stand for?
[blank_start]S[blank_end] [blank_start]E[blank_end] [blank_start]R[blank_end] [blank_start]C[blank_end] [blank_start]A[blank_end]
Respuesta
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Sarco
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Sarcoplasmic
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Endo
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Endoplasmic
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[plasmic] Reticulum
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[plasmic] Ryanodine
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Calcium
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Concentration
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Activation
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Activator
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Adjustment
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ATPase
Pregunta 6
Pregunta
The role that Phospholamban plays in regulation of the SR Ca pump is:
Respuesta
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Inhibitory; cancelled when phosphorylated.
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Inhibitory; reinforced when phosphorylated.
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Permissive; cancelled when phosphorylated.
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Permissive; reinforced when phosphorylated.
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