435 



TOPOGRAPHICAL SURVEY OF THE MORE IMPORTANT 

 REGIONS OF THE BODY. 



The Read. 



682. 1. Regio occipito-frontalis, comprehends the cranial vault, 

 above a line between protuberantia occipitalis, proc. mastoideus, 

 and root of the nose. Thickness of section :=". Composition: 

 1. External skin (thick, and covered with hair). 2. Very thick 

 fibro-cellular tissue containing fat, with superficial vessels and 

 nerves. 3. M. epicranius with the galea. 4. Loose fibro-cellu- 

 lar tissue. 5. Pericranium (firmly attached to the sutures by 

 vasa emissaria and prolongations of the dura mater). 6. Bones 

 (strongest in front in the central line, where is crista frontalis). 

 7. Dura mater with sinus longitudinalis in the middle line 

 torcular Herophili at the tuber occipitale, (sinus later alis thence 

 to the inferior posterior angle of the parietal bones). 8. Arach- 

 noidea, pia, cerebrum. 



683. 2. Regio temporalis, temples, is bounded, anteriorly, by 

 proc. orbital, of frontal bone; behind, by the root of proc. zygo- 

 malic, and meatus auditorius ; below, by zygomatic arch ; above, 

 by linea temporalis (semicircular). 



Thickness : = 12'" (before and below); = 6'" (above and be- 

 hind.) Parts : 1. Skin (behind beset with hair). 2. Fibro-cel- 

 lular tissue containing fat, with art. temporalis, which divides into 

 frontal and parietal branches at a distance of 15'" above the zy- 

 goma, 4'" from the external auditory meatus. 3. M. attollens 

 auriculce and fasc. superficial. 4. Loose fibro-cellular tissue. 

 5. Fascia temporalis, between the two layers of which below, a 

 triangular space with fat and art. temporal, med. 6. M. tempo- 

 ralis ; anteriorly fat, vasa et nerva temporal, profundi. 7. Pe- 

 riosteum and bones, -pars squamosa temporal., os parietal., fron- 

 tal., ala magna sphenoid., os zygomatic. 8. Art. meningea 

 media ; two fingers' breadth removed (and above) from proc. 

 orbitalis oss. zygomat. 9. Dura mater, &c. 



684. 3. Aural region (see Organon auditus). 



685. 4. Regio-mastoidea, is bounded, in front, by the groove 

 between the cartilage of the ear and proc. mastoid. ; behind and 

 above, by the curved line at which the growth of hair terminates : 



