1.

Study the figure depicting human larynx carefully and answer the following question: (i) some parts are labelled as a,b,c,d,e . Name them (ii) Write one major function of each of these.

Answer» (i) (a) Epiglotis (b ) Cartilaginous rings of trachae (c ) Trachea (d ) Larynx (e ) Vocal cord .
(ii) Functions of parts :
(a) Epiglottis closes the glottis during swallowing to prevent the entry of food into wind pipe .
(b) Cartilaginous rings prevent the trachea from collapsing .
(c ) Trachea is a wind pipe for passage of air into or out of the lungs.
(e ) Vocal cords help in producing sound.


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