The significance of muscular variations : illustrated by reversions of the anti-brachial flexor group / by Geo. S. HUntington.

  • Huntington, George S. (George Sumner), 1861-1927.
Date:
[1895]
Catalogue details

Licence: Public Domain Mark

Credit: The significance of muscular variations : illustrated by reversions of the anti-brachial flexor group / by Geo. S. HUntington. 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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    tions ami combinations of the four type lieads of origin and their insertion. I. Gleno-radial alone. A typical instance is pi-esented by Talpa europea. Geohe- gan * describes the muscle in this animal as follows : The Bi- ceps is single-headed, arising just above the glenoid articular surface by a long tendon which passes through a groove in the extreme anterior end of the humerus; this groove is at first a tunnel. It is onl}- after it has passed the elbow that the muscle becomes fleshy. Insertion below the middle of the radius. Welcker f corrects this statement to read that the insertion is above the middle of the radius. Other forms presenting the Glenro-radial muscle are : Nj'Cti- pitheeus, Stenops, Horse, Ruminants, | Lutra vulgaris.§ II. Goraco-radial alone. This form of the Biceps muscle is presented by Orycteropus capensis, Rhinoceros, Frog, Toad, Lacerta, || Phoca vitulina.^ In this animal the muscle arises from the coracoid process, is inserted into the radial tuberosity, and is combined with a short head, which is connected with the Brachialis anticus. III. Gleno-ulnai- alone. The muscle occurs in this form in H^'rax capensis and in Ro- dents generally.** lY. Coraeo-ulnar alone. Humphry.fl in describing the muscular s^-stem of Crypto- branchus japonicus gives the following account of the Coraco- brachialis longus. This is the largest muscle arising from the coracoid. It arises from the hinder edge of the coracoid and divides into two portions. Of these the larger and inner or lower division is in- serted into the ulnar edge of the humerus for a quarter of an inch above the internal condj'le ; the other division, being nearly *Geohegan, Myology of the Fore-limb of Talpa europea, Proceedings Dublin Biolog. Assoc, Vol. I., 1875, p. 5. t Welcker, H., Archiv f. Anatomic und Entwicklungsgeschichte, 1878, p. 23. X Krause, op. cit., p. 22?i. 'i Lucae, J. C. G., Die Robbe und Otter (Phoca vitulina und Lutra vulgaris) in ihrem Knochen und Muskelskelet, Frankfurt a/j,_ 1873, p. 204. I Krause, op. cit., p. 223. \ Lucae, op. cit., p. 199. ** Krause, op. cit., p. 223. W. Krause, Anatomic des Kaninchens, p. 107. tt Op. Cit., p. 33.