A guide to the dissection of the dog / by O. Charnock Bradley.

  • Orlando Charnock Bradley
Date:
1919
Catalogue details

Licence: In copyright

Credit: A guide to the dissection of the dog / by O. Charnock Bradley. Source: Wellcome Collection.

    18/258 page 6
    are lodged. It lies between the thighs, and forms a rounded prominence crossed in a cranio-caudal direction (generally obliquely) by a shallow groove in which a faint line, the raphe scroti, may be detected. The skin of the scrotum is thin and provided with comparatively few hairs. Dissection.—Make an incision through the skin along the raphe of the scrotum, and expose the underlying tissues. an. cervicales Fig. 2.—Diagram of the brachial plexus. The wall of the scrotum can be resolved into three layers. Of these the most superficial consists of skin. Under this is a fibrous tissue known as the tunica dartos, which, with its fellow of the other side, forms the median septum between the two scrotal cavities—the septum scroti. Removal of the dartos exposes the third layer composed of a fascial tunic lined within by a serous membrane. The fascia is continuous with that covering the deep face of the transverse abdominal muscle, and is in the form of a pear-shaped sac the narrow end of which is connected with the superficial end of the inguinal canal. Along the dorsal side of the narrower part of the sac there is a muscular slip, the external cremaster muscle (m. cremaster externus), associated with the internal oblique muscle of the abdominal wall, on the one hand, and terminating, on the other hand, in an aponeurosis within the substance of the wall of the scrotum.
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