lung blood vessel morphology trait arteriole morphology trait pulmonary arteriole morphology trait 2021-10-04T08:54:15Z Any measurable or observable characteristic related to the shape, structure, color, or pattern of any of the pulmonary arterioles, the smallest vessels which connect the pulmonary arteries to the capillaries that surround the pulmonary alveoli. CMO:0003189 CMO:0003190 Trait.ontology VT:0010955 caripark