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This is the strongest part of the fibrous cardiac skeleton. The upper chambers ( atria ) and lower ( ventricles ) are electrically divided by the properties of collagen proteins within the rings. The valve rings, central body, and skeleton of the heart consisting of collagen are impermeable to electrical propagation.
The wingspan measures 7 to 8.5 cm (2.8 to 3.3 in). P. e. mylotes is black with both sexes having a red patch on the dorsal hindwing. The dorsal forewing of the male has a triangular green patch.
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 ...
P. erithalion.Male: tibiae not thickened. Hindwing without distinct red spot behind the 2. median on the upper surface. Female: the spot before the 1. median of the forewing smaller than the preceding spot; band on the hindwing broad, pale on the innerside.
In a rare congenital disorder (dextrocardia) the heart is offset to the right side and is felt to be on the left because the left heart is stronger and larger, since it pumps to all body parts. Because the heart is between the lungs, the left lung is smaller than the right lung and has a cardiac notch in its border to accommodate the heart. [8]
Parides photinus is a member of the ascanius species group [7] ("Fringe-spots white. Hindwing with submarginal spots and unusually also discal spots or dots, or a discal band; mostly with tail").A quadrate whitish spot in space 2 of the forewings is quite peculiar of the ascanius group [8]
In the rest of the books, Aristotle studies the internal and external parts of the blood and non-blood animals, comparing them with human beings, showing the common and the specific. [ 1 ] For Aristotle, the material causes of an organism could not explain all its aspects.
A variety of pâtés (containing liver) on a platter Animal heads, brains, trotters, and tripe on sale in an Istanbul meat market. Offal (/ ˈ ɒ f əl, ˈ ɔː f əl /), also called variety meats, pluck or organ meats, is the internal organs of a butchered animal.