Mesothelium

Japanese: mesothelium

…For example, the follicular epithelium of the thyroid gland is generally a simple cuboidal epithelium, but it can be a simple columnar epithelium or a simple squamous epithelium. The endothelium of blood vessels is generally a simple squamous epithelium, but is specifically called the endothelium. The epithelium lining the pericardial, peritoneal, and pleural cavities is generally a simple squamous epithelium, but is specifically called the mesothelium. Epithelia are divided into subtypes based on their function: glandular epithelium, absorptive epithelium, sensory epithelium, respiratory epithelium, etc. …

From [serosa]

…there are three: the serous pericardium, the pleura, and the peritoneum. The surface of the serous membrane is covered with a single layer of simple squamous epithelium called the mesothelium, and is smooth. In the narrow sense, the term serous membrane refers to this epithelium, but in the broad sense, it also includes the subserous tissue that lies beneath it. …

*Some of the terminology that mentions "mesothelium" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…たとえば甲状腺の濾胞上皮は一般に単層立方上皮であるが，単層円柱上皮にも単層扁平上皮にもなりうる。　血管の内皮は一般に単層扁平上皮であるが，とくに内皮endotheliumとよび，また心膜腔，腹膜腔，胸膜腔の表面をおおう上皮は単層扁平上皮であるが，とくに中皮mesotheliumとよぶならわしである。　上皮はその機能によって，被蓋上皮，腺上皮，吸収上皮，感覚上皮，呼吸上皮などに分けられる。…