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In this figure are shown the winding passages of the ear (the labyrinth of the ear). The middle part of it (v) is the vestibule. From this go out on the upper side the semi-circular canals (x,y,z) and on the lower side of the passages of the cochlea (k). The opening into the vestibule (o) is covered by the second drum. Another opening (r) is also covered by a membrane or drum. The cochlea (k) is so called because it is shaped like a snail's shell.

The Cochlea and Passages of the Ear

In this figure are shown the winding passages of the ear (the labyrinth of the ear). The middle part…

"Diagram of the Middle and Internal Ear." — Blaisedell, 1904

Ear

"Diagram of the Middle and Internal Ear." — Blaisedell, 1904

Semi-diagrammatic section through the right ear. Labels: M, concha; G, the external auditory canal; T, tympanic, or drum-membrane (ear drum); P, tympanum, or middle ear; o, oval window; r, round window. Extending from T to o is seen the chain of the tympanic bones; R, Eustachian tube; V, B, S, bony labyrinth; V, vestibule; B, semicircular canal; S, cochlea; b, l, v, membranous labyrinth in semi-circular canal and in vestibule. A, auditory nerve dividing into branches for vestibule, semicircular canal, cochlea.

Ear and Auditory Canal

Semi-diagrammatic section through the right ear. Labels: M, concha; G, the external auditory canal;…

Semidiagrammatic section through the right ear. Labels: M, concha; G, external auditory meatus; T, tympanic membrane; P, middle ear; o, oval foramen; r, round foramen; R, pharyngeal opening of Eustachian tube; V, vestibule; B, a semicircular canal; S, the cochlea; Vt, scala vestibuli; Pt, scala tympani; A, auditory nerve.

Section of the Ear

Semidiagrammatic section through the right ear. Labels: M, concha; G, external auditory meatus; T, tympanic…

View, very much enlarged, of the external phase of the bony labyrinth of the left side, open, exposing the vestibule and its contents, etc.

Labyrinth and Vestibule of the Ear

View, very much enlarged, of the external phase of the bony labyrinth of the left side, open, exposing…

View of the outer wall of the nose. The turbinated bones having been removed. Labels: 1, vestibule, 2, hiatus semilunaris; 3, opening of antrum of highmore; 4, bulla ethmoidalis; 5, agger nasi; 6, opening of anterior ethmoidal cells; 7, cut edge of superior turbinated bone; 8, cut edge of middle turbinated bone; 9, pharyngeal orfice of Eustachian tube.

Outer Wall of Nose

View of the outer wall of the nose. The turbinated bones having been removed. Labels: 1, vestibule,…

The vestibule of the ear. It is a central common cavity of communication between the osseous parts of the internal ear.

The Vestibule

The vestibule of the ear. It is a central common cavity of communication between the osseous parts of…