John has been suffering agonizing pain with each breath and has been informed by the physician that he has pleurisy. (a) Specifically, what membranes are involved in this condition? (b) What is their...

John has been suffering agonizing pain with each breath and has been informed by the physician that he has pleurisy.

(a) Specifically, what membranes are involved in this condition?

(b) What is their usual role in the body?

(c) Explain why John’s condition is so painful.