Definition

1. Noun:
   • A membranous tissue covering internal organs and other internal surfaces of the body: Epithelial tissue is a primary animal tissue that forms continuous sheets of cells. It lines the cavities and surfaces of blood vessels and organs throughout the body, serving as a protective barrier, and is involved in secretion, absorption, and sensation.

Usage Examples

• Noun:
  • The skin is composed of layers of epithelial tissue.
  • Damage to the epithelial tissue lining the stomach can lead to ulcers.
  • The primary function of this epithelial tissue is absorption of nutrients.

Advanced Usage

• "Simple epithelial tissue": Refers to a single layer of epithelial cells.
  • Simple epithelial tissue is found in areas where filtration or absorption is the primary function, such as the kidneys.
• "Stratified epithelial tissue": Refers to multiple layers of epithelial cells.
  • Stratified epithelial tissue provides protection in areas subject to wear and tear, like the skin and esophagus.

Variants and Related Words

• Epithelium (n): Another term for epithelial tissue, often used interchangeably.
  • The cornea is covered by a transparent epithelium.
• Epithelial (adj): Of or relating to epithelial tissue.
  • The biopsy showed abnormal epithelial cells.

Synonyms

• Epithelium: The cellular covering of internal and external body surfaces.
• Surface tissue: A descriptive synonym emphasizing its location and protective role.

Related Phrases

• Epithelial layer: A specific sheet or stratum of epithelial cells.
  • The intestinal epithelial layer is constantly renewed.
• Epithelial barrier: Refers to the protective function of the tissue.
  • The epithelial barrier prevents pathogens from entering the bloodstream.

Related Concepts

• Basement membrane: The thin, fibrous layer underlying the epithelial tissue to which it attaches.
  • The epithelial tissue is anchored to the connective tissue by a basement membrane.
• Glandular epithelium: A type of epithelial tissue specialized for secretion.
  • The pancreas contains glandular epithelium that produces digestive enzymes.

Noun

1. membranous tissue covering internal organs and other internal surfaces of the body