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The metaphysis (pl.: metaphyses) is the neck portion of a long bone between the epiphysis and the diaphysis. [1] It contains the growth plate , the part of the bone that grows during childhood, and as it grows it ossifies near the diaphysis and the epiphyses.
[3] [4] Between the epiphysis and diaphysis (the long midsection of the long bone) lies the metaphysis, including the epiphyseal plate (growth plate). During formation of the secondary ossification center, vascular canals (epiphysial canals) stemming from the perichondrium invade the epiphysis, supplying nutrients to the developing secondary ...
dia-+ physis, "between the growth parts" epiphysis: The end regions of a long bone; regions of secondary ossification. epi-+ physis, "on top of the growth part" physis (epiphyseal plate) Also known as the growth plate. In a long bone it is a thin disc of hyaline cartilage that is positioned transversely between the epiphysis and metaphysis. In ...
From World War I onwards, a variant of the British red-white-blue roundel with the white omitted has been used on camouflaged aircraft, which between the wars meant night bombers. During the Second World War , the colours were toned down and the proportions adjusted to reduce the brightness of the roundel, with the white being reduced to a thin ...
The Army Institute of Heraldry describes the War Office Seal as follows: . In the center is a Roman cuirass below a vertical unsheathed sword, point up, the pommel resting on the neck opening of the cuirass and a Phrygian cap supported on the sword point, all between on the left an espontoon and on the right a musket with fixed bayonet crossed in saltire behind the cuirass and passing under ...
The epiphyseal plate, epiphysial plate, physis, or growth plate is a hyaline cartilage plate in the metaphysis at each end of a long bone.It is the part of a long bone where new bone growth takes place; that is, the whole bone is alive, with maintenance remodeling throughout its existing bone tissue, but the growth plate is the place where the long bone grows longer (adds length).
After World War II many badges were phased out of the United States Armed Forces in favor of more modern military badges which are used today. A unique obsolete badge situation occurred with General of the Air Force Henry H. Arnold , who in 1913 was among the 24 Army pilots to receive the first Military Aviator Badge , an eagle bearing Signal ...
Due to the effect of orthochromatic film – the most widely available film during World War I and onwards through the early World War II years – rendering the blue very pale, and the red very dark in photographs, historians in the 1950s and 1960s incorrectly believed a white ring roundel had been used on home defence aircraft. Ratio 1:3:5 Type A