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Contractile Peripapillary Staphyloma
Archives of Ophthalmology, 1966Among the rarest of all the congenital anomalies of the eye is peripapillary staphyloma or scleral ectasia, in which a normal or nearly normal optic nerve head lies at the bottom of a deep excavation in the fundus. This condition must be distinguished from coloboma of the optic disc, in which the defect is within the abnormal nerve head itself, 1 and ...
James B. Wise +2 more
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Quantification of myocardial contractility
The American Journal of Cardiology, 1970Until the mid 1950’s there was a growing tendency to assume that the heart met the constantly changing hemodynamic demands of the body primarily by varying end-diastolic volume (the Frank-Starling relation) and heart rate. Although many cardiologists and physiologists had noted that cardiac performance could be modified without concurrent parallel ...
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Contractile Proteins and Myofibrillogenesis
1993Publisher Summary This chapter discusses how muscle protein isoforms are expressed in the developing muscle and how the expressions of various myofibrillar proteins are interrelated. The regulatory mechanisms of protein assembly that leads to thin and thick filament formation are also presented.
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The Contractility of Protoplasm
The American Naturalist, 1929CONTRACTILITY, elasticity, cohesiveness, rigidity and tensile strength are closely related properties of living matter which owe their existence to a specific type of structure. Polarity and conductance are other properties of protoplasm which, though of quite a different nature from those first enumerated, depend upon the same specific structure.
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Contractile Proteins of the Heart
Hospital Practice, 1983Research findings to date indicate that there may not be a discrete change in contractile proteins in the common forms of heart failure. While the search for a defective myosin molecule in this context no longer seems promising, it remains plausible to propose "up-regulation" to a myosin variant with high ATPase activity as a means of increasing ...
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Nature, 1921
IN connection with previous correspondence on the mode of production of the contractile vacuole in Protozoa (NATURE, vol. cvi., pp. 343, 376, 441), I find that it is, in point of fact, Prof. Marcus Hartog to whom the credit of the osmotic view is to be given. In a communication to the British Association in 1888 (Rep., p. 714) this observer pointed out
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IN connection with previous correspondence on the mode of production of the contractile vacuole in Protozoa (NATURE, vol. cvi., pp. 343, 376, 441), I find that it is, in point of fact, Prof. Marcus Hartog to whom the credit of the osmotic view is to be given. In a communication to the British Association in 1888 (Rep., p. 714) this observer pointed out
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Ca2+ and the contractile proteins
Journal of Molecular and Cellular Cardiology, 1984Troponin regulation can be divided into two categories, primary and secondary. While the former underlies the processes common to troponin-regulated muscles, the latter varies between different types of muscle. One example of secondary regulation is the Ca2+ dependent interaction of troponin T and troponin C, which tends to suppress the myosin-actin ...
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1989
Mechanical work is performed by all living organisms. Moving of cells or cell aggregates (organs like muscles or organisms as a whole) is the most obvious form of mechanical work; it gives organisms the ability to move away from a noxious environment or to move toward beneficient regions of space.
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Mechanical work is performed by all living organisms. Moving of cells or cell aggregates (organs like muscles or organisms as a whole) is the most obvious form of mechanical work; it gives organisms the ability to move away from a noxious environment or to move toward beneficient regions of space.
openaire +2 more sources