- 搜标题
- 搜题干
- 搜选项
单项选择题
A 12-year-old boy experiences muscle weakness after swimming. He is diagnosed as periodic hyperkalemic paralysis. What causes his muscle weakness?()
A．Decreased potassium conductance in muscle cells
B．Increased duration of action potentials produced
C．Increased release of neurotransmitters
D．Inactivation of sodium channels in muscle cells
E．Hyperpolarization of muscle cells
B．Increased duration of action potentials produced
C．Increased release of neurotransmitters
D．Inactivation of sodium channels in muscle cells
E．Hyperpolarization of muscle cells
