| OCR Text |
Show 1870.] MYOLOGY OF C H A M A E L E O N PARSON1I. 881 not take origin either from the femur, as in the Iguana*, or from the interarticular cartilage, but from the posterior aspect of the tibia, partly within the internal lateral ligament. Passing downward obliquely to the peroneal side of the foot, it is inserted (close to and superficial to the insertion of the biceps) into the peroneal side of the plantar ossicle. At its origin this muscle has the insertion of the gracilis on its inner side, that of the semitendinosus on its peroneal side. Fig. 24. s.jir. Deeper muscles of back of right leg. B. Biceps. F.D1. Flexor longus digitorum. F.D2. Flexor tertius digitorum. G. Gracilis. G. E. Gastrocnemius externus. 67.1. Gastrocnemius internus. I. P. Ilio-peroneal. P. Peroneus. S. Tibial adductor. 8. M. Semimembranosus. S. T. Semitendinosus. T. A. Tibialis anticus. T. P. Tibialis posticus, y. Tendon of femoro-caudal. Flexor longus digitorum (figs. 17, 18, 19, 23, 24, & 29, F. D1). Just reversing the condition of the gastrocnemius externus, this muscle is very broad above, but becomes tendinous below. It arises, by muscular fibres, from the femur, above the peroneal condyle (just above the femoral origin of the flexor tertius), also from the fascia behind the peroneal part of the interarticular cartilage, and, thirdly, from the hinder side of the fibula, below its summit. Passin°- downward it suddenly contracts to a delicate tendon placed between the tendons of the flexor hallucis and flexor tertius. It is inserted into the third and fourth, its tendon bifurcating. The branch to the fourth digit receives a slip from that tendon of the flexor tertius which goes to the fifth digit. The branch to the fourth digit receives two slips, one from the flexor tertius, the other from the flexor longus hallucis. Flexor longus hallucis (figs. 20, 26, & 29, F. H). This muscle is placed very deeply (between the tibialis posticus and the popliteus), * P. Z. S. 1867, p. 705. |
