part of part of lung faveolus lung faveolus Dunker (1978) coined the terms ediculae or faveoli to describe the unit structure of the reptilian parenchymal, which are analogous to mammalian alveoli, but are up to 1,000 times larger than alveoli of similar sized mammals[PMID:12625309] A bellows-shaped respiratory unit extending from the outer wall of the lung into a central air space. faveoli UBERON:0009058 edicula multicellular anatomical structure