Corresponds to the anterior. (Costomediastinal) line of pleural reflection. 2. It is deeply notched in the left lung posterior. to 5th costal cartilage by the pericardium costal cartilage by the pericardium. and extends vertically downwards to form. Lingula.
Generally speaking, a principle is a rule, standard, or belief of one kind or another. As an adjective, principal means âmost importantâ, while a principal is â generally speaking â a person who is most important in a particular organization or group.
In general usage principal refers to a person who plays an important role or holds a high position: Last week, there was a meeting among the principals in the deal. In legal and financial English, however, principal is often a noun (from principal person).In the law of agency, the principal is the one on whose behalf the agent acts: She attended the meeting as the agent of a principal who wished to remain anonymous.n general usage principal refers to a person who plays an important role or holds a high position: Last week, there was a meeting among the principals in the deal. In legal and financial English, however, principal is often a noun (from principal person).