MICROANATOMY

Detailed explanation-1: -Secretion: Epithelial tissue in your glands (glandular epithelium) can secrete (release) enzymes, hormones and fluids. Absorption: The epithelial lining of your internal organs, such as your liver and lungs, can allow the absorption of certain substances.

Detailed explanation-2: -Simple columnar epithelial cells can specialize to secret mucus that coats and protects the surrounding surface from damage(INSERT LINK). Because the epithelium can be innervated, simple columnar epithelium is also specialized to provide sensory input. These cells are found in the cornea, inner ear, and nose.

Detailed explanation-3: -Non-ciliated simple columnar epithelium is made up of glandular goblet cells which secrete mucin to form mucus. The rest of the cell is made up of cytoplasm with membrane bound secretory granules which secrete the mucin, and are found towards the apical surface of the cell.

Detailed explanation-4: -Simple cuboidal epithelium functions include diffusion, absorption, secretion, and protection. Diffusion and absorption are the processes by which epithelial cells move substances out of the fluid or tissue they are surrounding, and secretion is the process of releasing substances into that fluid or tissue.