_1_, Skin; _2_, parietal cartilage; _3_, floor of nasal cavity; _4_,
lamina transversalis; _5_, mucous membrane of hard palate; _6_,
upper lip; _7_, frontal bone; _8_, frontal sinus; _9_, cranial plate
of frontal bone; _10_, cranial cavity; _11_, dotted line indicating
anterior limit of olfactory region; _a_, superior turbinal; _b_,
inferior turbinal; _b′_, _b″_, inferior turbinal fold; _c_, _e_,
ethmoturbinals; _d_, cribriform plate of ethmoid; _f_, superior
meatus; _g_, middle meatus; _h_, inferior meatus; _i_,
naso-pharyngeal meatus. (After Ellenberger, in Leisering’s Atlas.)
]
The =false vocal cords= extend from the cuneiform cartilages to the
thyroid. The =true vocal cords= are large and prominent. The entrance to
the large lateral ventricle and saccule is a long slit parallel with the
anterior margin of the true vocal cord.
The crico-thyroid muscle is thick. The hyo-epiglotticus is well
developed, and is double at its hyoid attachment. The anterior part of
the thyro-arytenoideus arises on the cuneiform cartilage. Hence Lesbre
has suggested the name cuneo-arytenoideus for it.