Read the description of an animal tissue given below: "This tissue is made of a single thin layer of flattened cells with irregular boundaries. It is primarily involved in functions like forming a diffusion boundary." Which of the following anatomical structures is lined by the tissue described above?

Step-by-step solution

The given description corresponds to simple squamous epithelium, which is composed of a single thin layer of flattened cells with irregular boundaries and functions in forming a diffusion boundary. Simple squamous epithelium is found in the walls of blood vessels and air sacs of lungs (alveoli). The tubular parts of nephrons are lined by cuboidal epithelium. The inner lining of the stomach and intestine is composed of columnar epithelium. The dry surface of the skin is covered by compound epithelium. Answer: Walls