Question

Cells that line the thoracic, pericardial, and abdominal cavities are known as:

A. Mast cells.
B. Macrophages.
C. Schwann cells.
D. Mesothelial cells.

Answer 1

Mesothelial cells line the thoracic, pericardial, and abdominal cavities.

Step-by-step explanation:

The cells that line the thoracic, pericardial, and abdominal cavities are known as Mesothelial cells. Mesothelial cells are derived from the mesoderm and they form the outer covering of organs and the inner lining of body cavities. For example, the pleura lines the outer covering of the lungs and the inner lining of the thoracic cavity, while the peritoneum lines the outer covering of abdominal organs and the inner lining of the abdominal cavity.