2. 2. It is suggested that calcium and sodium ions can make an additive contribution to the overshoot potential by carrying the inward current. 3. 3. Barium ions nad depolarizing currents affect the neurones in a manner indicative that one role of calcium is to stabilize the membrane ...
摘要: Offers a look on the role of calcium as the central regulator of plant growth and development. Effect of calcium on plants; Role of calcium in determining the structural rigidity of the cell; Relationship between the action potential calcium and the inhibition of streaming....
Describe the role of sodium, NA+ and potassium, K+ in the nervous system. What are the steps to muscle contractions? Explain using action potential, troponin. Explain the role of ATP in muscle contraction. How does this relate to rigor mortis? (a) Describe the anatomy of the sarcoplasmic ...
Sperelakis N (1984) Properties of calcium-dependent slow action potentials: their possible role in arrhythmias In: Opie LH (ed) Calcium Antagonists and Cardiovascular disease Raven Press New York pp 277–291 Google Scholar Sung RJ, Elser B, McAllister RG (1980) Intravenous verapamil for termin...
Potassium channels regulate the membrane excitability of neurons, play a major role in shaping action potentials, determining firing patterns and regulatin... STOCKER,M - 《Toxicon》 被引量: 168发表: 2004年 Calcium-activated potassium channels contribute to human skeletal muscle microvascular endothelial...
In 1883, Ringer showed that to get isolated hearts to contract, it was necessary to have Ca2+ ions in the perfusion medium [421]. This was the first demonstration of the critical role of calcium in cellular activity. Remarkably, a hundred years passed before the importance of calcium was re...
Many experimental studies claimed that, short-term memory, an intrinsic property of paced cardiac myocytes, has been regulated by either intracellular calcium cycling or membrane ionic currents, manifested by a time constant of cellular action potential duration (APD) restitution. Although both factors ...
Amplitude and Kinetics of Action Potential-Evoked Ca2+ Current and Its Efficacy in Triggering Transmitter Release at the Developing Calyx of Held Synapse. Action potentials (APs) play a crucial role in evoking Ca2+ currents (ICa) through voltage-gated calcium channels (VGCCs) and transmitter releas...
Role of ion flux in the control of c-fos expression. Nature 322, 552–555 (1986). References 58 and 59 describe that opening of L-type calcium channels after membrane depolarization of the mouse pheochromocytoma cell line PC12 triggers transcriptional induction of the c-Fos gene. These ...
Gárdos, G., 1959, The role of calcium in the potassium permeability of human erythrocytes,Acta Physiol. Acad. Sci. Hung.15:121–125. Google Scholar Gärdos, G., 1966a, The role of 2,3-diphosphoglyceric acid in the potassium transport of human erythrocytes,Experientia22:308. ...