下列哪项不影响心肌细胞的auto-rhythmicity A: maximal repolarization potential B: threshold potential C: effective refractory period D: 4期自动去极速度
下列哪项不影响心肌细胞的auto-rhythmicity A: maximal repolarization potential B: threshold potential C: effective refractory period D: 4期自动去极速度
The correnct description about the process of repolarization phase of AP is A: only be attributed to the Na+ channel inactivation. B: only be attributed to the activation of K+ channel. C: attributed to both the Na+ inactivation and K+ channel activation. D: only be attributed to the Cl- channel activatio.
The correnct description about the process of repolarization phase of AP is A: only be attributed to the Na+ channel inactivation. B: only be attributed to the activation of K+ channel. C: attributed to both the Na+ inactivation and K+ channel activation. D: only be attributed to the Cl- channel activatio.
Which of the following cell activities need energy consumption? <br/>() A: Maintain normal resting potential B: A large amount of Na+<br/>influx occurs when the threshold potential is reached C: K+<br/>outflow in repolarization phase of action potential D: Ca2+<br/>in the cytoplasm of skeletal muscle accumulates into the sarcoplasmic<br/>reticulum E: Uneven distribution of Na+<br/>and K+<br/>inside and outside the cell
Which of the following cell activities need energy consumption? <br/>() A: Maintain normal resting potential B: A large amount of Na+<br/>influx occurs when the threshold potential is reached C: K+<br/>outflow in repolarization phase of action potential D: Ca2+<br/>in the cytoplasm of skeletal muscle accumulates into the sarcoplasmic<br/>reticulum E: Uneven distribution of Na+<br/>and K+<br/>inside and outside the cell