Simple Squamous Epithelium

Cuboidal Epithelial Cell

• Description:

  • as long as it is wide

  • central, spherical nucleus

  • may have microvilli on apical surface

Embryonic loose Connective Tissue

• location:

  • embryonic mesoderm

• Description:

  • include mesenchymal and mucous tissues

    • mesenchymal = gel-like ground substance with mesenchymal cells and a few reticular fibers

    • mucous tissue = jelly-like ground substance with sparse mesenchymal cells and few fibers

• Function:

  • supports epithelia

  • protects developing organs

  • provides environment for diffusion of materials

Nucleus of squamous cell

• Location:

  • central in cuboidal epithelial cell

• Description:

  • spherical structure

  • nuclear envelope with double membrane

• Function:

  • DNA Replication

  • DNA transcription

  • Ribosomal RNA synthesis

Simple cuboidal epithelium

• Location:

  • folllicle of thryoid gland

  • kidney tubules

  • ducts of many glands

  • surface of ovary

• Description:

  • single layer of cells that are approximately as tall as wide

  • central, spherical nucleus

• Function:

  • absorption and secretion

Simple squamous epithelium

• Location:

  • lining of alveoli in lungs

  • endothelium

  • mesothelium

• Description:

  • single layer of flat, irreguraly shaped cells

  • central, flattened nucleus

• Function:

  • Diffusion

  • Filtration

  • Secretion

Squamous cell

• Location:

  • simple squamous epithelia

  • stratified squamous epithelia

• Description:

  • flat, irregularly shaped cell