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Torrent-Guasp focused further on the relationship between anatomy and physiology, i.e. between the form, structure and function of the human myocardium. It is commonly believed that the motion of the heart (systole-diastole) is active-passive: the former is produced by the active contraction of the cardiac musculature contraction while the ...
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
The heart is a muscular organ found in most animals.This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]
The heart's cardiac skeleton comprises four dense connective tissue rings that encircle the mitral and tricuspid atrioventricular (AV) canals and extend to the origins of the pulmonary trunk and aorta. This provides crucial support and structure to the heart while also serving to electrically isolate the atria from the ventricles. [1]
The heart did not pump blood around, the heart's motion sucked blood in during diastole and the blood moved by the pulsation of the arteries themselves. Galen believed that the arterial blood was created by venous blood passing from the left ventricle to the right by passing through 'pores' in the interventricular septum, air passed from the ...
Demi Moore is opening up about her struggles with her body.. In a Nov. 14 interview with Elle, Moore revealed she developed an eating disorder when she was younger because of the immense pressures ...
Major risk factors for angina include cigarette smoking, diabetes, high cholesterol, high blood pressure, sedentary lifestyle, and family history of premature heart disease. A variant form of angina—Prinzmetal's angina—occurs in patients with normal coronary arteries or insignificant atherosclerosis. It is believed caused by spasms of the ...
Scarlett Johansson is 40 and feeling fine!. After hitting the big milestone on Nov. 22, the Avengers star appeared on LIVE with Kelly and Mark to discuss how it feels to be 40. “Well, it’s ...