• \Vin),-,s " of the

thyroid cartila)£,<;'




Fk;. 2S (SpaltehoU). A back (posterior) view of the larynx, etc. Note how
the arytenoid cartilages rest on the cricoid ; how the epiglottis overhangs, as its name
implies, the glottis; and that the posterior part of the windpipe is closed in by soft
Structures, including (unstriped) muscle.
VOICE-PRODUCINa MECHANISM 75

function for which, specific structures are essen-
tial. As sound is caused by vibrations of the air,
and these may be set up by vibrations of the vocal
cords, it may with absolute correctness be said
that the whole larynx exists for the vocal bands
so far as voice-production is concerned. Such a
view renders the study of the larynx much, more
interesting and rational; one is then engaged in
working out that solution of a problem which
Nature has accomplished.
