The anatomy of the humane body / By W. Cheselden.

  • William Cheselden
Date:
1784
Catalogue details

Licence: Public Domain Mark

Credit: The anatomy of the humane body / By W. Cheselden. Source: Wellcome Collection.

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    to grow at all. In old and confumptive perfons, and fometimes in difeafed or wounded limbs, they decreafe as well as the flefhy parts, though not fo fall, becaufe of their hardnefs. Sometimes the of- fifying matter flows out of the bones, and forms bony excrefcences ; and frequently in very old men it fixes on the arteries, and makes them grow bo- ny, and when this happens to a degree, the arte- ries lofe their power to propel the blood, until the extreme parts mortify. And though the cartilages and arteries are moll fubjedt to thefe changes, yet no part is fecure from them; for I have feen a large part of the mufcular fibres of the heart itfelf perfectly oflified. I have known one inftance of a deficiency of this ofiifying matter, in the lower jaw of an adult body ; where all that part on one fide, which is beyond the teeth, was of a fubftance between that of a cartilage and a ligament. In chil- dren that have died of the rickets, I have found the nodes on the bones foft, fpongy, and bloody, and in one fubjedt feveral of them as limber as lea- ther, and the perioftsum in fome places many times its natural thicknefs; but the cartilages and cartilaginous epiphytes had no apparent alteration in their texture, though fome were fwelled to more than twice their natural diameters. Every cylindrical bone has a large middle cavity, which contains an oily marrow, and a great number of lefler cells towards their extre- mities, which contain a bloody marrow. The A 3 bloody
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