The repolarizing phase
of AP of a neuron is formed by ()
A: deactivation of K+
channel
B: Na+
influx
C: K+ efflux
D: Ca2+
influx
E: Cl- influx
of AP of a neuron is formed by ()
A: deactivation of K+
channel
B: Na+
influx
C: K+ efflux
D: Ca2+
influx
E: Cl- influx
B
举一反三
- The((__phase))<br/>of AP of a neuron is formed by() A: deactivation of Na+<br/>channel B: Na+<br/>influx C: K+<br/>efflux D: Ca2+<br/>influx E: Cl-<br/>influx
- The depolarizing phase of AP of a neuron is formed by () A: deactivation of Na+<br/>channel B: Ca2+<br/>influx C: K+efflux D: Na+<br/>influx E: Cl-<br/>influx
- The depolarization phase of AP is attributed to A: Na+ influx B: K+ outflux C: Na+ outflux D: K+ outflux
- The depolatization phase of AP is attributed to A: Na+ influx B: K+ outflux C: Na+ outflux D: K+ outflux
- 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
内容
- 0
地高辛的心脏毒性与心肌细胞内哪些离子变化有关() A: K+过低,Na+过高 B: K<br/>+过高,Na+过低 C: K<br/>+过高,Ca2+过低 D: K+过低,Ca2+过高 E: Na<br/>+过低,Ca2+过高
- 1
H2O、K+、Na+、Cl-、I-体系的独立组分数是____ A: K= 3 B: K<br/>= 5 C: K= 4 D: K<br/>= 2
- 2
心室肌细胞动作电位2期的离子机制是[br][/br](1.0) A: Na+内流,K+外流 B: Na+内流,Cl-外流 C: Na+内流,Cl-内流 D: Ca2+内流,K+外流 E: K+外流,Ca2+外流
- 3
抑制性突触后电位的产生,是由于突触后膜提高了对下列哪组离子的通透性? A: Na+,K+,Cl-,尤其是对K+ B: Ca2+,K+,Cl-<br/>,尤其是对Ca2+ C: Na+,K+,尤其是对Na+ D: K+,Cl-,尤其是对Cl- E: K+,Ca2+,Na+,尤其是对Ca2+
- 4
兴奋-收缩藕联中起关键作用的离子是()。 A: K<br/>+ B: Na<br/>+ C: Ca<br/>2+ D: Cl<br/>– E: Na +和Cl<br/>–