Results 231 to 240 of about 2,864,293 (283)

The Cardiac Sarcomere and Cell Cycle

Current Cardiology Reports, 2022
The lack of adult human cardiomyocyte proliferative capacity impairs cardiac regeneration such as after myocardial injury. The sarcomere, a specialized actin cytoskeletal structure that is essential for twitch contraction in cardiomyocytes, has been considered a critical factor limiting adult human cardiomyocyte proliferation through incompletely ...
Anthony M. Pettinato, Feria A. Ladha, J. Travis Hinson   +2 more
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The cardiac cycle

Anaesthesia & Intensive Care Medicine, 2012
Abstract The heart consists of four chambers that are connected in such a way that contraction of them causes the heart to act as a pump, the right half of the heart passing blood from the venae cavae to the pulmonary circulation for oxygenation and the left half of the heart pumping oxygenated blood from the pulmonary veins into the aorta and ...
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Oscillations of cAMP with the cardiac cycle

Biochemical and Biophysical Research Communications, 1983
Oscillations of cAMP with the cardiac cycle were demonstrated in the rat heart using a stimulator-triggered rapid freeze-clamp to decrease the temperature of the heart from 37 degrees C to -80 degrees C in 5 msec (20,000 degrees/sec) at a predetermined phase of the cardiac cycle. The nucleotide, cAMP, oscillated 60% with the cardiac cycle during normal
J, Wikman-Coffelt, R, Sievers, R J, Coffelt, W W, Parmley   +3 more
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The Cardiac Cycle

Abstract The cardiac cycle is a series of physiological events in which blood moves through the chambers of the heart in alternating phases of systole and diastole. Movement of blood throughout the cardiac chambers is dependent on pressure changes and gradients, generated by alternating contraction and relaxation of myocardium.
Robert Pellicer, Alaa Abd-Elsayed
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The cardiac cycle—a model

Journal of Biological Education, 1985
This easy-to-construct model makes use of the redundant kymograph and illustrates dramatically the cardiac ...
L. A. Morgan, N. Ross
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Indoor Cycling for the Cardiac Patient

JAMA: The Journal of the American Medical Association, 1971
To the Editor.— When the patient with coronary disease is "back on his feet" and regular daily exercise is considered essential to keeping him there, I prescribe indoor cycling, and the prescription is as specific as any written for his medication. There are many reasons for preferring indoor cycling to walking, swimming, jogging, and golf.
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The Wright Cardiac Cycle Table: A Novel Tool to Teach the Cardiac Cycle

The FASEB Journal, 2017
The Wiggers Diagram has been the standard tool for teaching the events of the cardiac cycle for nearly 100 years. However, as it often displays related cardiac cycle events on different figures in the diagram, many students have trouble grasping how these components work together to pump blood into arteries.
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Signal Detection and the “Cardiac Arousal Cycle”

Psychophysiology, 1972
ABSTRACTThe hypothesis was tested that different phases of the cardiac cycle would be associated with differences in either sensory capacity or response bias, as estimated by signal detection analyses. Each of 10 subjects was given 800 signal (SN) and 800 non‐signal (N) trials randomly distributed throughout the cardiac cycle.
L F, Delfini, J J, Campos
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Reaction time as a function of the cardiac cycle

British Journal of Psychology, 1980
Simple reaction times to auditory stimuli varied with the phase of the cardiac cycle in which the stimulus was presented. Longitudinal studies showed that stimuli triggered at different phases in the ECG gave rise to different rhythmic patterns of behaviour.
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The Cardiac Function Cycle

1996
The manifold functions of the blood described in some of the other chapters (cf. Chaps. 88, 90–99) can only be fulfilled if the blood circulates continuously through the body. The main driving force for the movement of blood is provided by the mechanical activity of the heart.
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