Epithelia are grouped into two general classes: (1) Epithelial Membranes-covering or lining of the body (skin or stomach lining) and (2) Glandular Epithelium-for increased secretion epithelial cells grow down into the connective tissue and form glands.pithelial Membranes. Epithelial membranes provide many diverse functions in the body including protection from wear and tear, drying, or excess moisture; secretion of many different products; and absorption of nutrients and other molecules.
The ninth season of The Big Bang Theory was confirmed on May 12, 2015, alongside seasons 8 and 10. It will air during the 2015-16 television season. Season 9 will premiere on Monday, September 21, 2015. First taping, August 11, 2015.
Once again, The Big Bang Theory will air its first few episodes Mondays at 8:00pm, followed by new comedy Life in Pieces. Once Football is over, both comedies move to Thursdays and Supergirl will kick off Mondays (probably at the start of November), leading into Scorpion and NCIS: Los Angeles.