. Cunningham's Text-book of anatomy. Anatomy. Zygomatic process Supra-meatal Remain masto-squamosal suture Tuberce at root of zygoma Tubereulum articulare Mandibular fossa. Petro-tympanic fissure Post-glenoid process Tympanic part Mastoid proces: / ^ Vagina External acoustic meatus Tympano- External processu mastoid acoustic styloid ei fissure process Styloid proces Fig. 136.—The Eight Temporal Bone seen from the Parietal Side. The squamo-zygomatic part is coloured blue ; the petro-mastoid, red. The tympanic part and styloid process are left uncolonred. sharply defined posteriorly by an obliqu
. Cunningham's Text-book of anatomy. Anatomy. Zygomatic process Supra-meatal Remain masto-squamosal suture Tuberce at root of zygoma Tubereulum articulare Mandibular fossa. Petro-tympanic fissure Post-glenoid process Tympanic part Mastoid proces: / ^ Vagina External acoustic meatus Tympano- External processu mastoid acoustic styloid ei fissure process Styloid proces Fig. 136.—The Eight Temporal Bone seen from the Parietal Side. The squamo-zygomatic part is coloured blue ; the petro-mastoid, red. The tympanic part and styloid process are left uncolonred. sharply defined posteriorly by an oblique irregular fissure, the remains of the masto- squamosal suture. Immediately above and behind the external acoustic meatus there is often a little projecting spur of bone, the spina suprameatum (supra- meatal spine). The angular recess between this process and the supramastoid crest is of interest surgically, and is known as Macewen's triangle. The same authority has pointed out that the masto-squaniosal suture frequently remains open till puberty and occasionally after, and may be of importance as a channel along which infective processes may extend. The cerebral surface of the squamous part, less extensive than the parietal aspect owing to the bevelling of the parietal border, is marked by the impression of the gyri of the temporal lobe of the cerebrum, and is limited below by the petro- squamosal suture, the remains of which can frequently be seen. It is crossed in front by an ascending groove for the middle meningeal artery and its accompany- ing venous sinuses, branches from which course backwards over the bone in grooves more or less parallel to its parietal border. The parietal border of the squamous part is curved, sharp, and scale-like, being. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cunnin
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
