(B) Difference in absorption spectrum of a heart in oxygenated and deoxygenated state. (C) Fluorescence spectra obtained from oxygenated heart (dashed line) and deoxygenated heart (solid line). To minimize the influence of the tissue absorption changes caused by the oxygenation status of the heart...
where it forms a linear heart tube. This primary heart field gives rise to both the left and right atria and the left ventricle. The linear heart tube undergoes looping at E8.5, and during this stage a population of pharyngeal mesoderm-derived...
They are discussed in the context of different heart fields and of the evolution of the heart.Previous article in issue Next article in issue Introduction The adult heart in birds and mammals is composed of integrated functional units, which pump the oxygenated and deoxygenated blood separately in...
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Theright atriumreceives deoxygenated blood from systemic veins; theleft atriumreceives oxygenated blood from the pulmonary veins. The atria collect blood and pump it into the ventricles. The heart can still function without atria however the ventricular output will be less effective. ...
tilted, inverted crown wrapped around the root of the great vessels. Thecoronaryarteriesare responsible for carrying nutrient-rich, oxygenated blood from the left ventricle to the myocardium; while thecoronaryveinstake nutrient – poor deoxygenated blood away from the myocardium and to the right ...
of the body to the heart. The main function of the blood vessels is to transport oxygenated blood from the heart to the rest of the body (via the lungs), and collect deoxygenated blood from the different organs and take it to the heart for oxygenation (which takes place in the lungs)....
and ADC (< 0.001 mm2s−1) values, representing poorly oxygenated tissues with lower diffusivity. The spatial maps for this component show the highest signal in the periphery of placental lobules. Component three contains some spectral peaks with higher T2* (> 0.07 s) and ADC (> 0.1...
oxygenated blood from the lungs returns to the heart. Therefore, in evolutionary terms, if mixing of oxygenated and deoxygenated blood was to beavoidedin the heart, alterations to its structure had to occur. Land vertebrates developed lungs, a new vein (thepulmonary vein) to take blood from th...
causing some mixing of oxygenated and deoxygenated blood. Incoarctation of the aorta, the aorta may be narrowed just below the point where the arteries supplying the upper part of the body emerge, thus increasingblood pressurein the upper half of the body and reducing pressure in the lower half...