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Show 360 PROF. K. VON BARDELEBEN ON THE [Apr. 17, minimi digiti. ficial muscle ends in a weak aponeurotic expansion (fascia palmaris) and the Pp.; the deep one goes to the lig. carpi trans vers um. Hand:-(3) The "piso-metacarpeus" comes from the pisiform and the lig. c. transv., and is inserted into the fifth meta-bone. (4) A muscle from the lig. carp, transv. (tendon of the deep palmar muscle) to the fifth metacarpal and first phalanx of the minimus, divides into J (a) =the opponens y (b) = the flexor brevis (5) A muscle from the tendon of the superficial palmaris to the second phalaux of the fifth digit; the tendon is perforated by the tendon of the fl. projundus. I consider the muscle (4) and its homologue-also in Man- as the vestiges of an old flexor brevis superfieialis (comp. Hyrax). Supplied by the n. ulnaris and meclianus:- (1) The flexor digitorum sublimis, connected with the profundus at the origin and with the lumbricales of the 4th and 3rd digits (vide below). The^. sublimis arises-(i.) from the humerus, connected with the humeral head of the ulnaris internus and two heads of the palmaris longus ; (ii.) from the radius, in common with the radial head of the profundus; (iii.) from the ulna, with the ulnar part of the profundus. Insertion: digits 2-4; ends in tendon-sheaths and on the phalanges. (2) The flexor digitorum profundus. Origin : (i.) humerus, with the radialis internus ; (ii.) radius, with the subhmis ; (iii.) ulna,with the sublimis. Insertion : by five tendons to digits 1-5 and eight lumbricales-hke muscles to the tendon-sheaths of digits 2-5. (3) The 8 " lumbricales " are quite remarkable :- Origin. (a) Tendon for the 5th dig., radial side. (b) Tendon for the 4th dig., above. (c) Tendon for the 4th dig., rad. side. (d) Tendon for the 3rd dig., above (ulnar). (e) C o m m o n tendon and tendon for the 3rd dig., rad. side. (/) Tendon for the 3rd dig., rad. side. (g) Tendon for the 2nd dig., above (ulnar side). (h) C o m m o n tendon, tend. 1st and 2nd dig. Insertion. Radial border of the 5th dig. Tendon of the flex. subl. to the 4th dig., and sheath. Rad. border of the 4th dig. Tendon of the flex. subl. for the 3rd dig., and sheath. Rad. border of the 3rd dig. Ulnar border of the 2nd dig. Tendon of the flex. subl. 2nd dig., and sheath. Radial border of the 2nd dig. I think the muscles a, c, e, and h are real "lumbricales." What the others mean I do not know. Perhaps we have here the |
