The American journal of the medical sciences . Tongue and a Portion of the Htoid Bone ofTHE Ostrich.—a, a portion of mucous membraneof the tongue ; b, hyo-glossus ; c, cornu of theOS hyoides ; d, body of the same ; 1, hypoglossalnerve and chiasma. Fig. IV. Chiasma of the hypoglossus in the ostrich. The chiasma (Fig. III.), when ex-amined under the microscope, iseasily resolved into two sets offibres. Each nerve trunk {a, a)divides into two bundles, one ofwhich passes directly forwards to themuscles on the same side (5, 6), andthe other (c, c), crosses to the op-posite side. As the bundles pass
The American journal of the medical sciences . Tongue and a Portion of the Htoid Bone ofTHE Ostrich.—a, a portion of mucous membraneof the tongue ; b, hyo-glossus ; c, cornu of theOS hyoides ; d, body of the same ; 1, hypoglossalnerve and chiasma. Fig. IV. Chiasma of the hypoglossus in the ostrich. The chiasma (Fig. III.), when ex-amined under the microscope, iseasily resolved into two sets offibres. Each nerve trunk {a, a)divides into two bundles, one ofwhich passes directly forwards to themuscles on the same side (5, 6), andthe other (c, c), crosses to the op-posite side. As the bundles passeach other in the chiasm, the fibres become somewhat separated and spread out. The number of fibres in the direct and decussating bundles are about the same, therefore the influence of each nerve on the muscles of the op-posite, is, undoubtedly, equal to that on those of the same side with itself. In the Python.—As the larynx upon which this dissection was made had been cut away from the surrounding parts, the connections of the laryngeal
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Keywords: ., bookcentury1800, bookidamericanjournalo47th, booksubjectmedicine
