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THE VIBRATORY APPARATUS. 7
protect the vocal cords inside (Fig. 5). It is situated at the top of the wind-pipe, with which it is actually con- |
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Fig. 1.—The Vocal Apparatus. |
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Consisting of—L, Lungs; W, Windpipe; VC, Vocal Cords, the opening into X, Pharynx, guarded by E, Epiglottis; Pharynx opens into M, Mouth, and N, Nose, which are separated by P, Palate ; NR, Bone forming roof of Nose ; F, Cavity in front of Head ; C, Cavity between Nose and Brain; UJ, Upper Jaw; LJ, Lower Jaw ; T, Tongue ; H, Hyoid or Tongue bone; B, Brain ; SC, Spinal Cord; 7CV, Seventh Cervical Vertebra.
tinuous, and above it opens into the throat (Fig. 1). The upper opening is protected by a cartilaginous lid called the epiglottis, which when it is raised and open allows the voice |
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