Electro-physiology (1896-98) Electro-physiology electrophysiolog02bied Year: 1896-98 Fir;. 250.—Homology between the electrical organs (0) of Torpedo, and the muscle of the common Ray (KM). (Pritsch.) too, in the Torpedinidce, where the powerful jaw muscles of the common ray (Fig. 256, I [-Of]), which are balled into a clump, fail almost entirely, and are reduced to an insignificant vestige. This chiefly involves the external or ventrally- developed muscles of the gill chamber, representing the system of the adductores arcnum and the so-called constrictor corn- munis supcrftcialis (Fritsch),
Electro-physiology (1896-98) Electro-physiology electrophysiolog02bied Year: 1896-98 Fir;. 250.—Homology between the electrical organs (0) of Torpedo, and the muscle of the common Ray (KM). (Pritsch.) too, in the Torpedinidce, where the powerful jaw muscles of the common ray (Fig. 256, I [-Of]), which are balled into a clump, fail almost entirely, and are reduced to an insignificant vestige. This chiefly involves the external or ventrally- developed muscles of the gill chamber, representing the system of the adductores arcnum and the so-called constrictor corn- munis supcrftcialis (Fritsch), which here correspond functionally with the masseter, pterygoid, and temporal muscles. The con- strictor seems more especially to have yielded the elements for the posterior part of the organ, while the broad, anterior portion seems to derive more particularly from the modification
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