BREATHING THROUGH THE NOSE.
The question is often asked, “Should one breathe through the nose or through the mouth?” Nature has so constructed the organs of respiration and determined their action that a person in health breathes through the nose, while a person in ill health often breathes through the mouth. By “breathing through the nose,” of course, is meant reposeful breathing. In extraordinary breathing some persons are obliged to breathe through the mouth, but this is always an indication of exhaustion or weakness. Every person should, if possible, maintain the habit of breathing through the nose.
Median Section of Mouth, Nose, Pharynx, and Larynx:—a, septum of nose; below it, section of hard palate; b, tongue; c, section of velum pendulum palati; d, d, lips; u, uvula; r, anterior arch or pillar of fauces; i, posterior arch; t, tonsil; p, pharynx; h, hyoid bone; k, thyroid cartilage; n, crycoid cartilage; s, epiglottis; v, glottis; 1, posterior opening of nares; 3, isthmus faucium; 4, superior opening of larynx; 5, passage into œsophagus; 6, mouth of right Eustachian tube.
ORGANS WHICH REINFORCE VOICE.
The organs that reinforce voice are its resonant chambers, viz.:—
Nares,