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.
principle(Noun) A rule used to choose among solutions to a problem. The principle of least privilege holds that a process should only receive the permissions it needs. principle(Noun) Moral rule or aspect. principle(Noun) A rule or law of nature, or the basic idea on how the laws of nature are applied.