II. Superficial Muscles of the Face and Head ([pp. 96]-[107], and [Figs. 63] and [64]).
These will perhaps not usually be dissected by the student. They should be studied on a well-dissected laboratory preparation, if possible. If they are to be dissected, this should be done if possible on a fresh specimen, as it is very difficult to dissect them on preserved material. Proceed as follows:
The skin should be removed with care from the sides and top of the face and head, without injury to the external ear.
1. The platysma ([p. 95], and [Fig. 62], a). Determine its cranial attachments.
2. The intermedius scutulorum ([p. 96], and [Fig. 63], a).
3. The corrugator supercilii medialis ([Fig. 63], b).
4. The orbicularis oculi ([Fig. 63], c; [Fig. 64], s).
5. The corrugator supercilii lateralis ([Fig. 64], k).
6. Notice the frontoauricularis if it exists.
7. The levator auris longus ([Fig. 63], g, g′). Transect and reflect.