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至今,骨骼肌浆膜的β-肾上腺素能受体尚未明确其具体作用。众所周知,肾上腺素能受体在骨骼肌中刺激Na~+-K~+ATP酶。最近的实验证实有着一种越过肌细胞膜而由β-肾上腺素能受体作用的、刺激Na~+-K~+运转系统(Na~+泵)的机制,帮助膜电势的调整和肌纤维膜内外Na-K的分布。β-肾上腺素能受体阻
To date, β-adrenergic receptors in skeletal sarcoplases have not been characterized specifically. It is well-known that adrenergic receptors stimulate Na ~ + -K ~ + ATPase in skeletal muscle. Recent experiments have demonstrated that there is a mechanism that stimulates the Na ~ + -K ~ + system (Na ~ + pump) by the β-adrenergic receptor across the muscle cell membrane to help regulate the membrane potential and the internal and external Na-K distribution. β-adrenergic receptor block