. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. ABDOMEN. Fig. c, the internal oblique ; e, the descending fibres; /, point of insertion into the pubis ; h, one of the re- versed arches; d, conjoined tendons; a, rectus muscle. good deal diminished in size, crosses over the inferior and anterior portion of the tunica vagi- nalis testis, and begins to ascend along the inner side of the testicle and cord, keeping more pos- teriorly : this constitutes the second bundle; it gradually increases in size as it ascends by re- ceiving the transverse fibres from the bundle of
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. ABDOMEN. Fig. c, the internal oblique ; e, the descending fibres; /, point of insertion into the pubis ; h, one of the re- versed arches; d, conjoined tendons; a, rectus muscle. good deal diminished in size, crosses over the inferior and anterior portion of the tunica vagi- nalis testis, and begins to ascend along the inner side of the testicle and cord, keeping more pos- teriorly : this constitutes the second bundle; it gradually increases in size as it ascends by re- ceiving the transverse fibres from the bundle of the opposite side, and it is inserted, sometimes by a distinct tendon, into the pubis near its spine. In some cases I have totally failed, even after the most careful dissection, in detecting a conti- nuity by muscular fibre between these two bun- dles, insomuch as to lead me to imagine that they may be connected by a very condensed cel- lular tissue or thin aponeurotic lamella after the manner of the digastric muscles. In general the external bundle is larger than the internal, but Cloquethas seen the reverse three times; and on referring to my notes, I find I have seen two instances in which the internal bundle exceeded the external in size. Many anatomists have noticed only the ex- ternal bundle of the cremaster, and altogether overlooked its reversed arches, which is not to be wondered at when we remember that even where the lateral bundles are strong and well developed, the arched fibres are sometimes pale and thin. However, the description now given is pretty generally admitted as the true one, and is sanctioned by such observers as Scarpa, Cloquet, Cooper, Velpeau, and I may add that I have seen this arrangement in cases where both testicle and cord were healthy. It would appear that its formation is effected by the testicle in its descent, for before that takes place the muscle does not exist; at least such is the result of Cloquet's observations on a con- siderable n
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