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Epithelial Tissues

Description

Mind Map on Epithelial Cells, created by courtney.remingt on 07/30/2016.

Mind Map by courtney.remingt, updated more than 1 year ago

	Created by courtney.remingt over 9 years ago

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Resource summary

Epithelial Tissues

Basic Structure
1. Apical surface
  Annotations:
  - Also called luminal surface. Faces "opening" of some kind.
  1. Cilia
  2. Microvilli
  3. Stereocilia
2. Basal Surface
  1. Connects to basement membrane
    1. Basal Lamina
      1. Type IV collagen
      2. Laminin (product of epithelial cells)
    2. Reticular Lamina
      1. Type III collagen
      2. Anchoring fibrils of type VII collagen
Intercellular junctions
1. Tight Junctions
  Annotations:
  - Interacting proteins form band around top. Controls paracellular diffusion of molecules
  1. Connects by Actin microfilaments
2. Adherent junctions (Zona adherens)
  1. Connects cytoskeleton w/ actin microfilaments and microtubles
3. Desmosomes
  1. Cadherins
    1. Desmogleins
    2. Desmocollins
4. Hemidesmosomes
  Annotations:
  - Anchors skeleton to basal lamina
  1. Integrins bound to laminin
    Annotations:
    - Laminin in basal lamina!
5. Gap Junctions
  1. Connexins
    Annotations:
    - Form hexameric complexes called connexons
  2. Intercellular communication and direct transfer of small molecules and ions
Types
1. Glandular
  1. Exocrine
  2. Endocrine
2. Covering
  1. Simple
    1. Squamous
      Annotations:
      - Lining of vessels (endothelium) Pericardium Pleural Mesothelial
    2. Cuboidal
    3. Columnar
  2. Stratified
    1. Squamous
    2. Cuboidal
    3. Columnar
    4. Pseudostratified
    5. Transitional

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