MUSCLES OF THE FOSTEItlOIt LIMHfi. 



307 



commences towards the middle of the tibia. This tendon jwiKsoa through a ring pierced 

 in thu ti-ndon of the muscle that represents the tendinous jHirtion of the flexor <>t th<> 

 in< -latur-iis : it tin n drviati-s inwards, und i> lix<-<l int<> tin.- cuneiforms and the 8U[M-ri'>r 

 i-xtn inity of tlie principal metatarsal bone (Fig. 138, 4). 



3. A proper extentor of the external digit p. igg 



(Interal extensor of tlie phalanges in Solipeds, 

 tli' 1 i >< -rum -us brcvis lateralis in Man), whose 

 hYsliy l-..l\ is altogether similar to that of the 

 analogous muscle in the Horse, and is termi- 

 nated by a long tendon which resembles that of 

 the proper extensor of the internal digit (Fig. 

 138,7,8,9, 10). 



t . A muscle which represents the peroneous 

 longus in Man, and of which in Solipeds there 

 is not a trace. This muscle commences by a 

 short, conical, muscular body in front of the 

 supero-external tuberosity of the tibia ; and it 

 terminates by a Ion? tendon whose direction is 

 as follows : included at first, like the muscular 

 portion, between the proper extensor of the ex- 

 ternal digit and the triple muscular fasciculus 

 already described, it arrives on the outside of 

 the tarsus, passes through the fibrous groove of 

 the proper extensor, where it is enveloped by a 

 special s-ynovial membrane, passes over the 

 latter in slightly crossing its direction, find is 

 inflected at tiret backwards, then outwards, in 

 insinuating itself underneath the external tibio- 

 tar.-al ligament, and the calcaneo-metatarsal 

 and the posterior tarso-metatarsal ligaments, 

 which retain it in a channel on the inferior 

 face of the cuboido-scaphoid bone. It is finally 

 inserted into the deep face of the second cunei- 

 form bone, and the external side of the superior 

 inity of the metatarsus, by a small branch 

 detached from the outer side of the principal 

 tendon. 



All these muscles are similarly disposed in 

 the Sheep and Gont. 



-The anterior tibial muscles of this 

 animal resemble those of Kuminanta, with the 

 exception of some peculiarities of secondary im- 

 portance, among which the following may ! 



The muscular fasciculus which replaces the 

 cord of the flexor metatarsi in the Hone termi- 

 nates on the scaphoid and the second cuneiform 1, Originating tendon of the muscle which 

 bone. The common extensor of the digits has represents the anterior extensor of the 

 four tendons, one for each digit. The proper 

 extensors have two each, one for the small dii:it. 

 the other for the great. The anterior tibitil 

 pane* to the second nm< i form bone. The 

 peronnu longut luteralis is inserted by its U-n- 

 d<>n into the upper extremity of the internal 



Iin-t:itartl. 



CABMVORA. Four muscles are described in 

 - animals: 1, An anterior tibial; 2, A 



EXTERNAL JU'SCLES OF THE LEG OF 

 THE OX. 



phalanges and the tendinous cord of the 

 flexor metatarsi in the Horse ; 2, Its 

 flexor fasciculus; 5, That which forms 

 the common extensor of the digits ; 5', 

 The tendon of this fasciculus; 6, It* 

 terminal bifurcation; 3, The long la- 

 teral peronous ; :V, Its tendon ; 4, Origin 

 of the anterior tibial (the muscular por- 

 tion of the flexor metatarsi in the 



Horse); 7, Proper extensor of the 

 external digit (shrt lateral peroneus); 8, Its tendon; 9, Its insertion into the second 

 phalanx; in, Us insertion into the third phalanx; 11, External Mly of the gas- 

 trocnemii; 11', Their tendon; 12, Solearis; 13, Tendon of the perforatus; 14, Ferforans; 

 14', It.s tendon; 15, Suspensory ligament of the fetlock; 16, The band it gives otf to 

 the perforatus tendon; 17, That which it sends to the proper extensor of the external 

 digit ; 18, The pedal muscle; 19, The insertion of the long vastu* on the patella and its. 

 external ligament. 



x 2 



