The anatomist's vade mecum : a system of human anatomy . nferior labial group. (Orbicularis oris),*Depressor labii inferioris,Depressor anguli labii inferioris. 7. Maxillary group. Masseter,Temporalis,Buccinator,Pterygoideus externus,Pterygoideus internus. 8. Auricular group. Attollens aurem,Attrahens aurem,Retrahens aurem. * The orbicularis oris, from encircling the mouth, belongs necessarily toboth the superior and inferior labial regions ; it is therefore enclosed withinparentheses in both. 166 CRANIAL GROUP. 1. Cranial group.—Occipito-frontalis. Dissection.—The occipito-fronta
The anatomist's vade mecum : a system of human anatomy . nferior labial group. (Orbicularis oris),*Depressor labii inferioris,Depressor anguli labii inferioris. 7. Maxillary group. Masseter,Temporalis,Buccinator,Pterygoideus externus,Pterygoideus internus. 8. Auricular group. Attollens aurem,Attrahens aurem,Retrahens aurem. * The orbicularis oris, from encircling the mouth, belongs necessarily toboth the superior and inferior labial regions ; it is therefore enclosed withinparentheses in both. 166 CRANIAL GROUP. 1. Cranial group.—Occipito-frontalis. Dissection.—The occipito-frontalis is to be dissected by making alongitudinal incision along the vertex of the head, from the tubercleon the occipital bone to the root of the nose; and a second incisionalong the forehead and around the side of the head, to join the twoextremities of the preceding. Dissect the integument and superficialfascia carefully outwards, beginning at the anterior angle of the flap,where the muscular fibres are thickest, and remove it altogether. Fig. 84.*. * The muscles of the head and face. 1. The frontal portion of the occipito-frontalis. 2. Its occipital portion. 3. Its aponeurosis. 4. The orbicularispalpebrarum, which conceals the corrugator supercilii and tensor tarsi. 5. Thepyramidalis nasi. 6. The compressor nasi. 7. The orbicularis oris. 8. Thelevator labii superioris alseque nasi; the adjoining fasciculus between numbers8 and 9 is the labial portion of the muscle. 9. The levator labii superiorisproprius; the lower part of the levator anguli oris is seen between the muscles10 and 11. 10. The zygomaticus minor. 11. The zygomaticus major. depressor labiiinferioris. 13. The depressor anguU oris. 14. Thelevatorlabii inferioris. The superficial portion of the masseter. 16. Part of itsdeep portion. 17. The attrahens aurem. 18. The buccinator. 19. Theattollens aurem. 20. The temporal fascia which covers in the temporal The retrahens aurem. 22. The anterior
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