Propriedades Contráteis do Músculo Cardíaco
Quiz
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Biology
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University
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Practice Problem
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Medium
Neydiana Lopes
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13 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
O principal cátion envolvido diretamente na contração dos cardiomiócitos é:
Na+
Ca2+
K+
Mg2+
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Os filamentos finos são formados por um conjunto de proteínas com a exceção de:
Tropomiosina
Actina
Miosina
Troponina
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
No estado de repouso, o sítio de interação da actina com a miosina é bloqueado pela:
Tropomiosina
Titina
Troponina
Nebulina
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A unidade contrátil básica das fibras musculares é conhecida como:
Cardiomiócitos
Disco Z
Sarcômero
Banda I
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
O sarcômero é limitado por duas linhas ou discos Z. A região clara é composta por quais tipos de filamentos:
Filamentos grossos
Filamentos de miosina
Filamentos finos
Nenhuma das opções
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A transmissão de força, esqueleto para a fixação entre os filamentos finos e grossos e a presença de receptores de estiramentos são funções/características relacionadas a que região:
Linha M
Disco Z
Banda A
Sarcômero
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Das regiões abaixo, qual é uma fonte importante de Ca2+ durante a contração dos cardiomiócitos:
Meio intracelular
Retículo Sarcoplasmático
Citoplasma
Mitocôndria
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