Because it comes from the greek word pleura, a feminine singular noun in the nominitive case, the plural form, grammatically speaking, would be pleurai (plurr-eye).
Whether or not this is the medically accepted plural, I am not sure. Things often get lost in translation (to use a bad idiom) when words are ported from another language to English.
Pleurae
The noun pleura is the singular form as a word for a membrane that envelopes the lungs of mammals.The plural noun is pleurae.The noun pleura is the plural form as a word for an insect body part.The singular noun is pleuron.
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
The plural of "she" is "they", so the plural of "she had" is "they had".
The plural form of the noun 'pleura' is pleurae.
The noun pleura is the singular form as a word for a membrane that envelopes the lungs of mammals.The plural noun is pleurae.The noun pleura is the plural form as a word for an insect body part.The singular noun is pleuron.
The plural fluid about 1 to 2 ml lubricates the visceral and parietal pleura during inspiration and expiration.
Visceral pleura
pleur(o)
The pleural cavity is the potential space between the two pleura (visceral and parietal) of the lungs, the intraembryonic coelom is one continuous space. During development this space partitions to form the pericardial, pleural and peritoneal cavities. The diaphragm and the paired pleuropericardial membranes separate the coelomic cavity into four parts. From the splanchnopleura (the visceral mesodermal layer) develops the Visceral pleura and from the somatopleura (parietal mesodermal layer) develops the parietal pleura.
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
"Groceries" is the plural form of "grocery."
The plural form of "meter" is "meters."
The visceral pleura is deep to the parietal pleura. The visceral is closer to the lungs.