[edit] Structure Each serous membrane is composed of a secretory epithelial layer and a connective tissue layer underneath. The epithelial layer, known as mesothelium, consists of a single layer of avascular flat nucleated cells (simple squamous epithelium) which produce the lubricating serous fluid.
About MattyB. Matthew David Morris aka MattyB is a 12-year-old pop singer/rapper from Atlanta, GA. He was born on January 6, 2003. Since beginning his music career at age 7, he has quickly become an Internet superstar with more than 2 Billion video views and 5 million YouTube subscribers. His social media consists of over 8 million followers on Facebook & Twitter combined.
The youngest country singer is Scotty McCreery. He is 19 years old. He was born October 9th, 1993. He is 5' 10. Some of his albums are Clear as Day, Christmas with Scotty McC â¦ reery and more.coty mcreary is the youngest country male singer. the reason is beacuse he is 18 years old.