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Henry Gray (1825–1861).  Anatomy of the Human Body.  1918.
 
of the incus. A narrow triangular patch extending downward and forward from the umbo reflects the light more brightly than any other part, and is usually described as the cone of light.


FIG. 1208– The right tympanic membrane as seen through a speculum. (See enlarged image)



FIG. 1209– Left temporal bone showing surface markings for the tympanic antrum (red), transverse sinus (blue), and facial nerve (yellow). (See enlarged image)


Tympanic Antrum.—The site of the tympanic antrum is indicated by the suprameatal triangle (Fig. 1209). This triangle is bounded above by the posterior root of the zygomatic arch; behind by a vertical line from the posterior border of the external acoustic meatus; in front and below by the upper margin of the meatus.

The Neck (Fig. 1210).—Larynx and Trachea.—In the receding angle below the chin, the hyoid bone (page 1288), situated opposite the fourth cervical vertebra, can easily be made out. A finger’s breadth below it is the laryngeal prominence of the

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