Epithelial & Connective Tissues: Structure, Function, Location
Classified in Biology
Written on in 
English with a size of 386.75 KB
Basement Membrane Structure & Function
| Component | Composition/Details |
|---|---|
| Basal Lamina | Collagen, Gaps, Laminin (epithelial secretion) |
| Reticular Lamina | Reticular fibers, collagen (CT cell secretions, mainly fibroblasts) |
| Functions |
|
Covering & Lining Epithelia
| Type | Function | Location |
|---|---|---|
| Simple Squamous | Filtration (kidneys), Diffusion (alveoli), Secretion (body cavities) |
|
| Simple Cuboidal | Secretion/Absorption | Pancreas ducts, smaller ducts, thyroid secretion chambers, kidney tubules, anterior surface of lens, posterior retina. |
| Ciliated Simple Columnar | Cilia move foreign objects (mucus, ova) | Bronchi, uterine tubes, spinal cord, sinuses, brain ventricles. |
| Non-Ciliated Simple Columnar |
| Small intestine, lines gut mucosa, GI tract, ducts in gallbladder. |
| Stratified Squamous | Protection from abrasion, defense from microbes |
|
| Stratified Cuboidal | Protection + limited secretion + absorption | Esophagus glands (protect from stomach acid), sweat gland ducts, parts of urethra. |
| Stratified Columnar | Protection/Secretion | Esophagus glands, pancreas glands, inner anal lining, inner eyelid. |
| Pseudostratified Ciliated Columnar | Secrete/Move mucus | Trachea/Upper airways. |
| Pseudostratified Non-Ciliated Columnar | Absorption/Protection | Epididymis, parts of urethra, gland ducts. |
| Transitional | Changes shape from stratified cuboidal to squamous depending on organ shape | Bladder |
