Sentence:  The natural anatomical and physiological defensive features of the upper respiratory tract , such as the <WSD>turbinates</WSD> of the nose and the cilia of the trachea and larger bronchi , are capable of impinging out the larger particles to which we are ordinarily exposed in our daily existence . 
Meaning of the word marked with <WSD> tags:  any of the scrolled spongy bones of the nasal passages in man and other vertebrates