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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 ...
Cardiac physiology. Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.
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 ]
See media help. The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. [1] It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, called systole. [1]
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Cardiac muscle. Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle that constitutes the main tissue of the wall of the heart. The cardiac muscle (myocardium) forms a thick middle layer between the ...
Falling Leaf Pumpkin. Use the stencil to gently trace a leaf shape onto silver Fanci-Foil Wrap, then cut out and repeat (or fold foil first to cut multiple leaves at once). Use Mod Podge to adhere ...
File. : Heart diagram-en.svg. Size of this PNG preview of this SVG file: 762 × 600 pixels. Other resolutions: 305 × 240 pixels | 610 × 480 pixels | 976 × 768 pixels | 1,280 × 1,008 pixels | 2,560 × 2,015 pixels | 893 × 703 pixels. Original file (SVG file, nominally 893 × 703 pixels, file size: 342 KB) This is a file from the ...