Epithelia tissue

• what is this tissue?

  simple squamous

  
• what is this tissue?

  stratified squamous

  
• what is this tissue?

  simple cuboidal

  
• what is this tissue?

  simple columnar

  
• what is this tissue?

  stratified squamous

  
• what is this tissue?

  stratified cuboidal

  
• what is this tissue?

  stratified columnar

  
• what is this tissue?

  pseudostratified columnar

  
• what type of tissue is this?

  simple columnar

  
• what type of tissue is this?

  pseudo-stratified columnar tissue

  
• what type of tissue is this?

  stratified squamous

  
• what type of tissue shape and type is this?

  stratified cuboidal

  
• what type of tissue is this?

  stratified columnar

  
• what type of tissue is this?

  simple squamous

  
• what type of tissue is this?

  stratified squamous keratinised

  
• function of epithelial tissue

  protection, secretion, absorption, excretion
• glandular epithelial tissue


  Cells produce a secretion required by the body

  
• surface lining epithelium


  Covers and lines all natural surfaces of the body

  
• structural features of epithelium

  highly cellular, with little intercellular substance, avascular, apical, and basal surfaces, underlying basement membrane
• How is epithelial tissue classified based on the number of cell layers?

  Simple epithelium, Stratified epithelium and pseudostratified
• definition of simple epithelium


  single layer of cells
• function of simple epithelium

  diffusion, filtration, secretion, absorption
• simple squamous epithelium location

  air sacs of lungs, walls of capillaries, lining of the heart, linings of blood and lymph vessels
• simple squamous epithelium function

  allows materials to pass by diffusion and filtration in sites where protection is not important; secretes lubricating substances in serosae
• simple cuboidal epithelium location

  Kidney tubules; ducts and secretory portions of small glands; ovary surface
• simple cuboidal epithelium function

  secretion and absorption
• simple columnar epithelium location

  ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus. Nonciliated type lines most of the digestive tract and bladder
• simple columnar epithelium function


  absorption; secretion of mucus, enzymes
• definition of stratified epithelia

  Epithelial tissue with two or more layers of cells
• function of stratified epithelium

  Provides protection against abrasion, pathogens, and chemical attacks.
• stratified squamous epithelium location


  lines the esophagus, mouth, and vagina
• stratified squamous epithelium function

  protects underlying tissues in areas subject to abrasion
• stratified cuboidal epithelium location

  sweat glands, salivary glands, mammary glands
• stratified cuboidal epithelium function

  protection
• stratified columnar epithelium location

  the male urethra and the ducts of some glands
• stratified columnar epithelium function

  secretion and protection
• definition of pseudostratified epithelium

  pretends to be more than one layer
• pseudostratified epithelium function


  secretion and movement of mucus via ciliary sweeping.
• Pseudostratified Columnar location


  ciliated tissue lines the trachea and much of the upper respiratory tract
• Pseudostratified Columnar function


  secretes mucus; ciliated tissue moves mucus