声门下腔
Cavitas infraglottica
定义
喉腔位于声襞以下的部分（声门下腔）起初呈椭圆形，但向下逐渐扩宽，变为圆形，并与气管管腔相延续。
參考資料
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
