Which term describes the wall that lines the body cavity itself?

Which term describes the wall that lines the body cavity itself?

• A. Parietal
• B. Somatic
• C. Visceral
• D. Thoracic

Answer: (A)

Lining the wall of a body cavity is described by the term parietal. In anatomy, the parietal layer forms the cavity’s outer lining, while the layer that covers the organs within that cavity is the visceral layer. For example, the parietal pericardium lines the pericardial cavity surrounding the heart, whereas the visceral pericardium covers the heart itself. The other terms don’t describe this lining role: somatic refers to the body in general, and thoracic denotes a region or cavity (the chest) rather than the lining of the cavity.

Lining the wall of a body cavity is described by the term parietal. In anatomy, the parietal layer forms the cavity’s outer lining, while the layer that covers the organs within that cavity is the visceral layer. For example, the parietal pericardium lines the pericardial cavity surrounding the heart, whereas the visceral pericardium covers the heart itself. The other terms don’t describe this lining role: somatic refers to the body in general, and thoracic denotes a region or cavity (the chest) rather than the lining of the cavity.