Sentence:  Also three other direct pathways of <WSD>alveolar</WSD> bronchial arterial supply were noted : via the pleura ; through the interlobular septa ; and along the terminal bronchiole ( figs. 14 , 17 , 18 , 19 ) . 
Meaning of the word marked with <WSD> tags:  pertaining to the tiny air sacs of the lungs