. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 66 THE MUSCLES. pli Fig. 6i. 23, 24, 25. Mm. petroJii/oidei posteriores (Ecker), (Fig's. 6i ' 3. 4)- Cuvier, »nn. sfylohyoidei, , p. 537.—Dugès, 20, 21, 22, masto-hyoi- deus (Fig. 4).— Zenker, pelro-hyoideus superior and inferior.— Klein, stylo-liijoideus, I. c, p. 18. These are three long-, thin muscles, which He nearly parallel to one another, and rnn from the prootic bone to the posterior cornu of the hyoid bone. All three arise, covered by the m. sternocleidomastoi- (leus, from the lateral extremity of the prootic, pas
. The anatomy of the frog. Frogs -- Anatomy; Amphibians -- Anatomy. 66 THE MUSCLES. pli Fig. 6i. 23, 24, 25. Mm. petroJii/oidei posteriores (Ecker), (Fig's. 6i ' 3. 4)- Cuvier, »nn. sfylohyoidei, , p. 537.—Dugès, 20, 21, 22, masto-hyoi- deus (Fig. 4).— Zenker, pelro-hyoideus superior and inferior.— Klein, stylo-liijoideus, I. c, p. 18. These are three long-, thin muscles, which He nearly parallel to one another, and rnn from the prootic bone to the posterior cornu of the hyoid bone. All three arise, covered by the m. sternocleidomastoi- (leus, from the lateral extremity of the prootic, pass round the pharynx and are attached, the w?. petrolii/oidevs posterior pjvimns (Fig". 6\ pk'i) to the anterior extremity, the secundus (Fig*. 61 /(A 3) to the middle ; and the terthis (Fig. 61 jjJi 4) to the hinder extremity of the posterior horn of the hyoid bone. 26. M. /li/ofj/ossvs (Figs. 59, 60, 61%). Cuvier, /. c, p. 588.—Dugès, 24, hyo-glosse. Arises from the bony posterior ex- tremity of the hinder process of the hyoid bone {lig'). The muscles of the two sides pass forwards and converge to the middle line, where they unite. The azygos muscle thus formed runs forwards on the ventral surface of the hyoid bone, between the mm. gen'ioJi//oidei, over the anterior border of the hyoid, and passes into the tongue, where it turns backwards and runs to the tip. (For action, see tongue.). Muscles of the hyoid bone of liana escx- . Ie7itii, seen from tlie riglit side and below. //' Anterior cornu. H'' Posterior cornu. hfl M. hyoglossus. H fi Body of hyoid bone. ph I M. petrohyoideiis anterior. ]ih 2, 3. 4 Mm. petrohyoidei posteriores. sm M. submaxiUaris. sm' Hinder portion of same. 27. lif. Cuvier, I. c, p. 5S7.—Meckel, /. c, IV, 339.—Dugès, 23, genio-glosse. Arises above the insertion of the m. geniohyoulens on either side near the middle line from the two anterior bones of the lower jaw. The two origins quickly unite to form a thick, very fir
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