Epithelial Tissue
Updated: 12/1/2020
Epithelial Tissue

Storyboard Text

  • Squamous
  • First we will discuss the molecular structure of the epithelial tissue. There are three different types.
  • Cuboidal
  • Columnar
  • Squamous epithelium cell:
  • basement membrane
  • The molecular structure of simple squamous epithelium consists of a single layer of flattened cells. Its function is to facilitate the diffusion of gases and small molecules.
  • nucleus
  • cytoplasm
  • cytoplasm
  • Cuboidal epithelium cell:
  • nucleus
  • The molecular structure of simple cuboidal epithelium consists of a single layer of cells that are as tall as they are wide. Cuboidal epithelium lines collecting ducts and tubes which absorb and secrete materials.
  • width
  • height
  • Squaous
  • Finally, the molecular structure of simple columnar cells consists of a single layer of cells that are
  • Columnar
  • Columnar epithelium cell:
  • basement membrane
  • Finally, the molecular structure of simple columnar cells consists of a single layer of cells that are taller than they are wide. It lines the small intestine, absorbing nutrients from the lumen of the intestine as well as the stomach, secreting acids and digestive enzymes.
  • nucleus
  • cytoplasm
  • So my skin is made of epithelial tissue, right? What exactly is epithelial tissue?
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