A manual of anatomy; containing rules for displaying the structure of the body, so as to exhibit the elementary views of anatomy and their application to pathology and surgery. To which are added observations on the art of making anatomical preparations / [John Shaw].

  • John Shaw
Date:
1822
Catalogue details

Licence: Public Domain Mark

Credit: A manual of anatomy; containing rules for displaying the structure of the body, so as to exhibit the elementary views of anatomy and their application to pathology and surgery. To which are added observations on the art of making anatomical preparations / [John Shaw]. Source: Wellcome Collection.

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    • superior anterior spinous process of the ilium to the linea alba, and the other in the linea alba to the pubes. The tendon is to be carefully separated from the internal oblique, and is to be fastened by a hook to the fore-part of the thigh. This will give us a view of a great part of the inguinal canal. The cord will be seen lying under the lower margin of the internal oblique, and so connected by cellular membrane to the edge of the muscle, that it is difficult for a student, in his first dissection, to tell what is muscle and what is cord; this is in a great measure owing to the cremaster muscle, which varies considerably in the manner it takes its origin. The dew may he made more distinct by pulling the cord in a direction towards the scrotum, and by taking off the cel¬ lular membrane from it, and from the margin of the internal oblique. By doing so, we shall see that the internal oblique is not attached to the whole extent of Po up art’s ligament, but that, at two inches and a half from the symphysis pubis, its attachment to the ligament ceases; it then passes, in the form of an arch, to the tubercle,* and to the linea ileo- pectineaf of the os pubis, so as to assist in closing the space behind the external ring. At the termination of the connexion of the internal oblique to Poupart’s ligament, the fibres which form the cremaster muscle come off; but, as these fibres occasionally arise from Poupart’s ligament, the cord sometimes appears as if it perforated the internal ob¬ lique;]: but in the greater number of cases, it is sufficiently * Spine of the os pubis ; Tuberculum Spinosum; Tuberosity of the pubes. f Linea ileo-pectinea; Linea Innominata, continuous with the crista. I M. Cloquet describes the cremaster as formed by some fibres of the obliquus internus, which are pulled down by the testicle and gubernacu- lum, during the descent. He says, that these fibres have two distinct attachments, one to the belly of the obliquus internus, and the other to the os pubis ; so that each fibre forms a loop (ties ansesj similar to ex¬ tensible cords, which, when fixed at their two extremities, are drawn down in the middle. He also says, that the testicle occasionally passes through the substance of the internal oblique, and then, the same ap¬ pearance of fibres is found both before and behind the testicle ; and that
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