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Guess who got a new scanner?
Now with this I´ll try to post all my anatomy studies (once I learn how it works), for now, here is part of my hand studies.
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Author: Cheselden, William (1688-1752).
Title: Osteographia, or The anatomy of the bones.
Publication Information: London: [William Bowyer], 1733.
Posted on December 3, 2012 via Good Form with 360 notes
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Posted on December 1, 2012 via pianistic. with 44 notes
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Top: Hand of a day-laborer who had been drowned 24 hours prior
Bottom: Hand of a drowned person submerged in running water for several weeksThe process of tissues decomposing and sloughing off in animals generally reaches its peak around three to four weeks, in a moderate climate. However, in running water, the washing away of the acids from the liquefied fats and proteins, and the lack of insect activity, can often significantly retard or alter the decomposition.
Because of this, it can often take several extra weeks for tissues submerged in running water to separate from the body, and when they do separate, they don’t so much slough off when their substrate is consumed, but “slip” off, often in large sheets. The dermis of the hand is well-connected to itself, but less well-connected to its substrate, and as such is often subject to a phenomenon called “gloving” - where the skin slips off in, you guessed it, a “glove”.
Atlas of Legal Medicine. Dr. Eduard von Hofmann, 1898.
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“Koalo” (Koala - Phascolarctos cinereus)
Sure, it lives its life in trees, dines almost exclusively on a plant genus that is incredibly non-nutritive and toxic to most animals (Eucalyptus), and the males have a two-pronged penis, but the koala has more in common with humans than you might think.
For one, they have lots of problems with venereal diseases, including one that’s so closely related to the human strain it can be transmitted across species - chlamydia. However, in koalas, chlamydia is present even in most healthy animals, and it’s only when the animal gets stressed or otherwise weakened that it manifests as disease. There’s currently a huge uptick in the numbers of koalas infected with chlamydia, causing mass sterility and, in many cases, death.
On a less dire note, koalas are the most distantly-related mammal to display “dermatoglyphes” - fingerprints with ridged loops and whorls, like humans have. In fact, it’s almost impossible to tell the difference between the two under a microscope. As Homo sapiens and Phascolarctos cinereus diverged over 70 million years ago, it’s clear that this is a case of convergent evolution, developed to help the koala grip onto branches and tree trunks.
Aracana, or, The museum of Natural History. George Perry, 1811.
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