胸部 きょうぶ だい動脈 どうみゃくなら
kyōbudaidōmyakunara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 胸部大動脈

1. If/when the thoracic aorta…; If/when there is a large thoracic aorta…

Nara Conditional
Anatomy