TEE BRACHIAL PLEXUS 



871 



gwa palmar tendon; it afterwards i-asees through the carpal slieath, giving a branch that 

 conetnutes the tnterr^al palmar collaterals of the thurnf,, and external of the fn^^xfu finaUr 

 orms tl.ree b, anches. the hr.t o which anaatomoses with the ulnar, at the surface of he palmar 

 arch, an.l .« lost o„ an artery ; the other two, receivinc, a filament fron. the ulnar at the r^Z 

 of the d:g.ts, b.fnrcate to J^.nn the internal pahnar collateral of the annularis, and collateral! of 

 the medncs and index. The second gives, in a.ldition, a slender branch, that is lost in thi 



Fig. 469. 



Fig 470. 



NERVES OF THE PALMAR FACE (DOG). 



A, Trunk of the median diviiling into six branches ; 

 Bl, branch of the superficial nervous arch ; b2, 

 branch disappearing; on a vessel ; b3, b4, branches 

 uniting with the corresponding ramuscules of the 

 ulnar; b5, branch forming the internal collateral 

 of the index , b6, rudimentary branch passing to 

 the thumb; C, collateral given off by the median; 

 Cl, C2, c3, c4, collaterals furnished by the median 

 and ulnar, a, Palmar branch of the ulnnr; b, 

 superficial branch giving off a filament to the hypo- 

 thenar, and a second that forms the superficial 

 nervous arch ; 61, deep branch passing to the 

 muscles of the skin ; m, not anastomosing with the 

 median ; ml, m2, anastomosing with the correspond- 

 ing brnn<h of the median ; the innermost passes to 

 the muscles of the thumb; c, c, c, collaterals fur- 

 nished by the ulnar. 



internal and middle lobe of the large cushion of the paw. In fine, the median of the Dog 

 furnishes to all the digits, except the auricularis and external border of the annularis. 



In the Cat, the median traverses the bony canal at the lower extremity of the humerus, 

 and separates Vielow the carpal arch into three branches. The internal branch is destined to 

 the nidinaentary thumb, and the internal palmar border of the index. The middle branch 



NERVES OF THE PALMAR FACE (CAT). 



A, Trunk of the median dividing into 

 two branches; B, internal branch, 

 giving a rudimentary filament to the 

 thumb, Bl, external branch, receiving 

 a filament, /. from theulnnr; c, C,C,C, 

 collaterals furnishe<l by the median. 

 a, Palmar branch of the ulnar divid- 

 ing into three branches ; 6, internal 

 branch, detaching the filament, /, to 

 the median ; 61, external branch : 

 62, deep branch ; c, c, c, coUaterala 

 furnished by the ulnar. 



