The inside of the PC is well laid-out with unobstructed access to the expansion slots.
That's why I ensured that opposing viewpoints were heard, unobstructed, at the summit.
Goods, services, people, businesses and capital should be able to circulate freely throughout the whole Community, unobstructed by national restrictions.
There was also a doubly committed juxta-arterial ventricular septal defect and an unobstructed left ventricular outflow tract.
Flow of blood was unobstructed, and the size of the left pulmonary artery and flow within it were normal.
The pulmonary venous return was unobstructed but drained to a confluence before entering the left sided atrium.
Recurrences of stenoses in previously dilated pathways, and new stenoses in previously unobstructed pathways, are commonly seen at follow-up.