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.
How do you spell principle at school? The spelling of the head of a school is the principal (this is taught to children as the principal is our pal, whether or not it is true).he correct spelling is principal and interest.  The principal is normally the amount borrowed, which is reduced by  paying any amount exceeding the interest.