0 valuable property owned by someone who wants to borrow money, that they agree will become the property of the company or person who lends the money if the debt is not paid back -- 担保品，抵押品
1 a smaller blood vessel or nerve that grows out of the main part -- （血管或神经）侧支
2 connected but less important, or of the same family although not directly related -- 附带的，次要的；（亲戚）旁系的，非直系的
Even more interesting was a direct collateral vessel originating from the descending thoracic aorta and connecting with the coronary circulation.
A collateral artery originating from the descending aorta supplied the left lung, while the right pulmonary artery originated from the arterial duct.
Rising real estate and stock prices increased the value of collateral, encouraging even more expansive lending.
The sources of these extracardiac collateral vessels were the bronchial and internal mammary arteries.
In other instances, segments of lung can receive supply both from non-communicating collateral arteries and from intrapericardial pulmonary arteries.
This schedule allows enough time for the patient to accommodate to this physiology, and yet obviate the ingrowth of aortopulmonary collateral arteries.
Blue represents arteries which can be traced to the central pulmonary arteries and red represents those that are continuations ofsystemicto-pulmonary collateral arteries.
This is far from the case in the presence of systemic-topulmonary collateral arteries.
