Notes. pleura. serous membrane lining the pleural cavity. there are two types of pleura: visceral pleura covers the lungs, parietal pleura lines the inner surfaces of the walls of pleural cavity; parietal pleura is sensitive to pain but visceral pleura is not sensitive to pain.
The pronoun 'our' is the first person, the speaker  and one or more other people.   The pronoun 'our' is the first person, plural, possessive  adjective, placed before aâ¦ noun to show that the noun  belongs to the speaker and one or more others.    Example: John and I came from Maine.
the grammatical person used by a speaker in statements referring to himself or herself (first person singular) or to a group including himself or herself (first person plural) 2. a pronoun or verb form in the first person, as I or am in English, or a set of such forms. 3. a literary style in which the narrative is told from the perspective of a narrator speaking directly about himself or herself: a story written in the first person. Origin of first person.