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The fifth edition was published in 2020. Malcolm E. Miller began work on the first edition of the textbook in 1946, having completed a thesis in 1940 entitled "The Dissection and Study of the Trunk of the Dog". [1] Miller based each description and illustration in the book on at least five canine dissections. [2]
Spontaneous coronary artery dissection (SCAD) is an uncommon but potentially lethal condition in which one of the coronary arteries that supply the heart, spontaneously develops a blood collection, or hematoma, within the artery wall due to a tear in the wall.
A key principle in the dissection of human cadavers (sometimes called androtomy) is the prevention of human disease to the dissector.Prevention of transmission includes the wearing of protective gear, ensuring the environment is clean, dissection technique [2] and pre-dissection tests to specimens for the presence of HIV and hepatitis viruses. [3]
Scrapie and other transmissible spongiform encephalopathies are caused by prions. [19] Prions were determined to be the infectious agent because transmission is difficult to prevent with heat, radiation and disinfectants, the agent does not evoke any detectable immune response, and it has a long incubation period of between 18 months and 5 years. [20]
Rollover sheep handler for crutching, foot inspection and paring, general husbandry, udder inspection etc. Springer - a ewe close to lambing. Stag – a ram castrated after about 6 months of age. Staple – a group of wool fibres that formed a cluster or lock. Store – a sheep (or other meat animal) in good average condition, but not fat ...
For example, in bighorn sheep, when two males meet each other, each tilts its head towards each other to give a good view of the horns. If the horns are approximately the same size, the sheep may fight to establish dominance. However, if the horn of one sheep is larger than the other, the sheep with the smaller horns will generally back off.
The word is, more broadly, used as a pejorative [1] catch-all term for experimentation on live animals [2] [3] [4] by organizations opposed to animal experimentation, [5] but the term is rarely used by practicing scientists. [3] [6] Human vivisection, such as live organ harvesting, has been perpetrated as a form of torture. [7] [8]
Aortography involves placement of a catheter in the aorta and injection of contrast material while taking X-rays of the aorta.The procedure is known as an aortogram. The diagnosis of aortic dissection can be made by visualization of the intimal flap and flow of contrast material in both the true lumen and the false lumen.
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