Cardiac muscle has to contract to pump blood throughout the vascular system. This lesson covers the dynamics and physiological processes regulating cardiomyocyte contraction and the ion channels involved. Card
2) It describes a wide spectrum of cardiac muscle contraction under different loading regimes, and the recent observation of the increase in the end-systolic pressure in an ejecting beat compared to the isovolumic beat. 3) It extends our understanding of the intracellular control of contraction...
生理学： Cardiac Muscle Contraction for the web
浦肯野纤维网间优势传导通路心脏的特殊传导系统 Heartspecializedconductionsystem 窦房结房室结B 希氏束浦肯野纤维网 心脏的特殊传导系统,A&B,Heartspecializedconductionsystem (0.02m/s) Sinusnode→atrium(0.4m/s) ↓ PreferentialpathwayVnodeVbundle(1.0~1.2m/s)0.02m/s)2.0m/s)房室延搁trioventriculardelay↓...
百度试题 结果1 题目All-or-none law in cardiac muscle contraction(心肌收缩的"全或无"现象) 相关知识点: 试题来源: 解析 心肌收缩的"全或无"现象:心肌收缩要么不产生,一旦产生,则全部心肌细胞都参加收缩, 称为心肌收缩的"全或无"现象。反馈 收藏 ...
Mechanisms linked to actin filaments have long been thought to cooperate in smooth muscle contraction, although key molecules were unclear. We show evidence that cardiac troponin T (cTnT) substantially contributes to Ca2+-mediated contraction in a physiological range of cytosolic Ca2+ concentration ([...
Troponin, working in conjunction with tropomyosin, functions as a molecular switch that regulates muscle contraction in response to changes in the intracellular Ca2+ concentration. Troponin consists of three subunits: the Ca2+-binding subunit troponin C (TnC), the tropomyosin-binding subunit troponin T...
Background Troponin T type 2 (cardiac), also known as TNNT2, is the tropomyosin-binding subunit of the troponin complex, which is located on the thin filament of striated muscles and regulates muscle contraction in response to alterations in intracellular calcium ion concentration. Mutations of thi...
Structural change resulting from the binding of calcium to specific sites on the regulatory TnC subunit, releases the inhibitory region of TnI from actin, anabling the attachment of the molecular motor protein myosin, allowing for muscle contraction and hence movement. The measurements of blood TnI ...
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