Which Is TRUE About the Pleural Sac

question 31

Multiple Choice

Which is TRUE about the pleural sac?

• A)It is continuous with the atmosphere and protects the lungs from infection.
• B)It is a closed sac surrounding each lung that contains only a tiny volume of lubricating fluid.
• C)It is a closed sac surrounding each lung and contains a large volume of surfactant.
• D)It is a closed,air-filled space surrounding both lungs that has a negative pressure compared to atmospheric pressure.
• E)It is bounded by pleural membranes that are very thin,which allows for abundant gas exchange.

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Definitions:

Physical Activity

Physical activity encompasses any bodily movement produced by skeletal muscles that requires energy expenditure, including activities undertaken while working, playing, traveling, and engaging in recreational pursuits.

Weight Bearing

The act of supporting weight with the legs and feet; crucial for building bone strength and preventing osteoporosis.

Quadriceps

A large muscle group on the front of the thigh, crucial for walking, running, and jumping.

Gluteal

Pertaining to the gluteus muscles, which are located in the buttocks and are responsible for the movement of the hip and thigh.