The principles of myodynamics / By J.S. Wight.
- Wight, J. S. (Jarvis Sherman), 1834-1901
- Date:
- 1881
Licence: Public Domain Mark
Credit: The principles of myodynamics / By J.S. Wight. Source: Wellcome Collection.
Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.
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![16. In a human body, whose entire weight is 1432 pounds, the recent bones weigh 21J pounds, and the recent muscles weigh ']^\ pounds : and the weight of the bones is to the weight of the muscles as, 43 : i55 ; and the weight of the muscles is to the weight of the body as, 155:287. It is easy to determine from the weights and the specific gravities of bones and muscles, that, in the hitman body, the bnlk of the muscles is more tha7i six times the bulk of the bones, 17. The force of a contracting muscle acting on a bony lever of the first, second, or third order is resolved into two rec- tangular components. (a) One of these components tends to move the movable bone, and may be called the movi^ig componejit: (b) The same component tends to hold the movable bone and the fixed bone to- gether, and may be called the rete7ttive com- ponent, (c) The other of these components tends to displace the movable bone from the fixed](https://iiif.wellcomecollection.org/image/b21204093_0030.jp2/full/800%2C/0/default.jpg)
