Your abdominal cavity, which contains most of your major organs, is a:
A) coelom lined by endoderm and mesoderm.
B) pseudocoelom lined by mesoderm.
C) pseudocoelom lined by endoderm.
D) coelom lined by ectoderm.
E) coelom lined by mesoderm.

Question

Quizplus · Accepted Answer

The abdominal cavity is a true coelom, which is a body cavity completely lined by tissue derived from mesoderm. This distinguishes it from a pseudocoelom, which is not fully lined by mesoderm, and from cavities lined by other germ layers such as endoderm or ectoderm.

Your Abdominal Cavity, Which Contains Most of Your Major Organs