10317605
Descrição
Quiz por Michael Jardine, atualizado more than 1 year ago
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Criado por Michael Jardine
aproximadamente 7 anos atrás
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Questão 1
Questão
Which of the following is NOT a type of Calcium channel?
Responda
-
G-type
-
L-type
-
N-type
-
T-type
Questão 2
Questão
An L-type Calcium channel has how many subunits?
(each controlled by a separate gene)
Responda
-
2
-
3
-
4
-
5
-
6
-
7
-
8
Questão 3
Questão
An L-type Calcium channel is highly selective for Calcium, but is also somewhat permeable to Sodium and Potassium.
Responda
- True
- False
Questão 4
Questão
During diastole, the Na/Ca exchanger and the SR Ca pump both move Ca. Which way around?
Responda
-
Na/Ca exchanger will pull Ca IN to the myoplasm; the SR Ca pump will pump Ca back INTO the SR.
-
Na/Ca exchanger will pull Ca IN to the myoplasm; the SR Ca pump will pump Ca back OUT of the SR.
-
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.
Questão 5
Questão
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]
Responda
-
Sarco
-
Sarcoplasmic
-
Endo
-
Endoplasmic
-
[plasmic] Reticulum
-
[plasmic] Ryanodine
-
Calcium
-
Concentration
-
Activation
-
Activator
-
Adjustment
-
ATPase
Questão 6
Questão
The role that Phospholamban plays in regulation of the SR Ca pump is:
Responda
-
Inhibitory; cancelled when phosphorylated.
-
Inhibitory; reinforced when phosphorylated.
-
Permissive; cancelled when phosphorylated.
-
Permissive; reinforced when phosphorylated.
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