part_of part of part of has part has part has_part contributes to morphology of composed primarily of tracheobronchial chondrocyte cartilage of bronchus UBERON:0001956 NCIT:C49209 bronchial cartilage bronchus cartilage bronchi cartilage MA:0001835 cartilage of bronchial trunk EMAPA:35192 cartilage of bronchi bronchial trunk cartilage The hyaline cartilaginous structures that support the bronchi, present as irregular rings in the larger bronchi (and not as regular as in the trachea), and as small plates and islands in the smaller bronchi; as the branching continues through the bronchial tree, the amount of hyaline cartilage in the walls decreases until it is absent in the smallest bronchioles[MP]. SCTID:278980009 FMA:62649 bronchial cartilage ring hyaline cartilage tissue bronchus lower respiratory tract cartilage cartilage element