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.
Principal is a term with many meanings. As it relates to business, a principal can range from a company's representative dealing with a contractor to the company's leader. Some companies have a specific position identified as the principal, and these positions often represent key members of the leadership team.: Principals have different roles depending on the nature of an individual business, but the universal responsibility of a commercial business principal is significant influence. Some principals are also the founder, owner and CEO. Others own a large portion of company equity and sign off on major decisions.